1. #1Infant girls(0-2)selective

   Keys: 2 yo, 1 year old, 2 year old, 2 year-old, age: 1, 1 year-old, months old, 1 yo, age: 2, baby

   Infant girls between the age of 0 to 2(completely flat chest, no public hair,vaginal opening(usually tightly closed by a hymen,can't insert any finger,), labia minora hidden within the labia majora,clitoral hood covering the clitoris completely,vagina incredibly tight and small with no visible opening,anus(Small, puckered opening about the size of a raisin)). Infant girls don't know how to sexually please other people, like blowjob or handjob. They won't feel any sexual pleasure. They won't produce sexual fluids or reach orgasm. Infant girls will wiggle and squirm around or even cry if they feel uncomfortable (get touched,caressed,rubbed with penis,toyed). Infant girls will feel extreme pain or even vagina laceration and bleeding if anyone try to put their penis inside their vaginismus and anus; they can't push inside, they will be stopped by small size and tightness. The taste and smell of a penis, precum or semen is impossible for them to get used to.

2. #2Toddler girls(3-5)selective

   Keys: 3 year-old, 4 year-old, 5 yo, age: 4, age: 5, 5 year old, 5 year-old, 4 yo, 3 yo, 3 year old, 4 year old, age: 3

   (Toddler girls between the age of 3 to 5(completely flat chest, no public hair,vaginal opening(can't insert any finger,tightly closed by a hymen,size(pencil tip)), labia minora hidden within the labia majora,clitoral hood covering the clitoris completely,vagina incredibly tight and small,anus(tightly closed, darker than surrounding skin,size(pencil tip))) Describe the size difference of anatomy and interactions in detail, one can't fit inside another anatomy depends on their size. Toddler girls won't feel any sexual pleasure. They won't produce sex fluids or reach orgasm. If they get touched,caressed,rubbed with penis or toyed, they will feel itchy and joy like cuddling. They will feel extreme pain, discomfort, vagina laceration and bleeding around if anyone try to put their penis inside their vagina or anus with force; they can't push inside, they will be stopped by small size and tightness at the entrance. They can nibble, sucking, licking on the glans or shaft. They would feel uncomfortable or scared if someone unfamiliar makes sexual contact with them. The taste and smell of a penis, precum or semen is very hard for them to get used to. Toddler girls usually don't know anything about sex, bear a mind of pure innocence. They usually don't know how to do blowjobs or handjobs, if they were asked to do so, they would think it's a cute game and would do it clumsily. The taste and smell of a penis, precum or semen is very hard for them to get used to.

3. #3Preschool grils(6-7)selective

   Keys: 6 yo, 6 year old, 6 year-old, 7 year-old, age: 6, 7 yo, 7 year old, age: 7

   (Preschool girls between the age of 6 to 7(breasts(flat or slightly raised),nipples(not discernible),no public hair,vaginal opening(can't insert any finger,closed by hymen, shape(simple slit to slightly more pronounced mounds on either side of the clitoral hood),size(small pinky finger,)),labia minora(visible, slightly pinker and redder than skin, still small and delicate, within the labia majora),clitoris(partially covered by clitoral hood),vagina is tight and Small, inner vagina wall(incredibly hot,tight,delicate,resistant,almost no depth),anus(tightly closed, darker than surrounding skin, size(finger size if stretched))) Describe the size difference of anatomy and interactions in detail, one can't fit inside another anatomy depends on their size. Preschool girls get way less sexual pleasure compared to adults. They won't produce sex fluids or reach orgasm. If they get touched,caressed,rubbed with penis or toyed, they will feel itchy and joy like cuddling along with some pleasure. They will feel extreme pain, discomfort, vagina laceration and bleeding around vagina or anus if anyone try to put their penis inside their vagina and anus with force; they can't push inside, they will be stopped by small size and tightness at the entrance. However, the glans can be half buried by labia minora and majora but not any further. Their mouths can't fit a medium or large penis, but can nibble, sucking, licking on the glans or shaft on them. Their mouth and anus can fit a small penis but not anything bigger, with only a small part of its length, and is discomfort for the girl. They would feel uncomfortable or scared if someone unfamiliar makes sexual contact with them. The taste and smell of a penis, precum or semen is unpleasant for them. If Preschool girls don't possess experience on blowjobs or handjobs, and they have to do so, they would do it haphazardly if without instructions.

4. #4School-aged girls(8-10)selective

   Keys: age: 10, 10 year-old, 8 year old, 8 yo, age: 8, 9 yo, 9 year-old, age: 9, 8 year-old, 9 year old, 10 year old, 10 yo

   (School-aged girls between the age of 8 to 10(breasts(flat or slightly raised),nipples(not discernible),no public hair,vaginal opening(size(pinky finger),hymen(location(bottom half of the vaginal opening),crescent,thin,visible capillaries),shape(a tight slit,two puffy mound closely together),opening size(about a finger)),labia minora(texture(smooth),visible, slightly pinker and redder than skin,thin and delicate, within the labia majora),clitoris(partially covered by clitoral hood),clitoral hood(prominently visible on the upper clit),vagina(tight, do not produce much sexual fluids,rather dry),inner vagina wall(incredibly hot,tight,delicate,very resistant, very shallow, wrinkled)) Describe the size difference of anatomy and interactions in detail, one can't fit inside another anatomy depends on their size. School-aged girls get less sexual pleasure compared to adults. They would be embarrassed if they orgasm. If they get touched,caressed,rubbed with penis or toyed by someone they trust or with her consent, they will feel loved and pleasure. They will feel much pain and discomfort or even vagina laceration and bleeding around vagina if anyone try to put their penis inside their vagina with force,they can't push inside(unless a very small penis), they will be stopped by small size and tightness at the entrance. However, the glans of medium and larger penis can be half buried by labia minora and majora but no further inside the vagina. Their mouths can't do deepthroat, medium or larger penis can't fit completely. They would feel uncomfortable or scared if someone unfamiliar makes sexual contact with them. The taste and smell of a penis, precum or semen is unpleasant for them. If School-aged girls don't possess experience on blowjobs or handjobs, and they have to do so, they would do it haphazardly if without instructions.

5. #5Preteen girls(11-12)selective

   Keys: 11 year-old, 11 yo, age: 12, 12 year old, age: 11, 11 year old, 12 year-old, 12 yo

   (Preteen girls between the age of 11 to 12(breasts(small mounds topped, typically A or AA cup),nipples(puffy),a thin layer of public hair(if not shaved),vaginal opening(can only insert one finger,hymen on entrance(if the hymen was not broken),shape(a small gap, like slit or puffy mound),texture(moist),size(spread apart(a thumb),not spread apart(a small gap)),labia majora(slightly darker),labia minora(visible, slightly pinker and redder than skin, still small and delicate, within the labia majora),clitoris(partially covered by clitoral hood),clitoral hood(prominently visible on the upper clit),vagina is tight, inner vagina wall(incredibly hot,tight,delicate,resistant,shallow,wrinkled)) Describe the size difference of anatomy and interactions in detail, one can't fit inside another anatomy depends on their size. Preteen girls are growing more curious about sexual related topics, they will get embarrassed if they orgasm. If they get touched,caressed,rubbed with penis or toyed by someone they trust or with her consent, they will feel loved and pleasure. They will feel pain and discomfort or even vagina laceration and bleeding around vagina if anyone try to put their penis inside their vagina with force; their penises can't push inside easily if they are big or the first penetration. Penis will be stopped by small vagina size and tightness, only with enough lube, the girl's arousal and time for the girl to stretch her vagina, then penises can push inside slowly. This would lead to more intense pain or even injury and bleeding if rushed, first-time penetration or the penis is big. They would feel uncomfortable or scared if someone unfamiliar makes sexual contact with them. The taste and smell of a penis, precum or semen is not welcoming for them. If Preteen girls don't possess experience on blowjobs or handjobs, and they have to do so, they would do it haphazardly if without instructions.

6. #6Early teen girls(13-14)selective

   Keys: 13 yo, age: 14, 13 year-old, age: 13, 13 year old, 14 year old, 14 year-old, 14 yo

   (Early teen girls between the age of 13 to 14(breasts(typically A cup or larger),nipples(puffy),a thick layer of public hair(if not shaved),vaginal opening(can insert two fingers,hymen on entrance(if the hymen was not broken),shape(a small gap, like slit or puffy mound),texture(moist),size(spread apart(a walnut),not spread apart(a small gap))),labia majora(darker),labia minora(visible, slightly pinker and redder than skin, still small and delicate, within the labia majora if not spread apart),clitoris(partially covered by clitoral hood),clitoral hood(prominently visible),clit(prominently visible),inner vagina wall(incredibly hot,tight,delicate,resistant(if first penetration),wrinkled)) Describe the size difference of anatomy and interactions in detail, one can't fit inside another anatomy depends on their size. Early teen girls know a lot about sex, and they are very curious and fascinated about it. They cherish the first time and would like to share it with someone they love and trust. They will get embarrassed if they reach orgasm for the first time in front of another person. If they get touched, caressed, rubbed with penis or toyed by someone they trust or with her consent, they will feel loved and intense pleasure. They will feel pain and discomfort or even vagina laceration and bleeding around vagina if the penises are big or the first penetration; only with enough lube, the girl's arousal and time for the girl to stretch her vagina, then penises can push inside slowly without causing discomfort. They would feel uncomfortable or scared if someone unfamiliar makes sexual contact with them.

7. #7Infancy Stage

   Keys: age: 1, age: 2, 1 year-old, 1 yo, 2 yo, 2 year old, baby, infant, newborn, months old, 1 year old, 2 year-old, 1 year old, 2 years old

   Infants-Toddlers 0-2 years old

   Girl Vagina: The Labia Majora can spread to the sides by about an inch. Labia Minora is behind Labia Majora and obscured, young, pale, and underdeveloped, an arched ridge above the vaginal opening. The clitoris is obscured by the clitoral hood, which is about the size of a grain of rice. The vaginal opening has a thin hymen film covering it which is no larger than a bean. Inside the vaginal canal is virgin, untouched and extremely tight, an extremely soft texture. No sexual fluids or lubrication is produced from this young vagina. If the hymen is broken, it will not fit anything bigger than a .5 inch circumference without serious laceration and bleeding, maybe death if it’s too large and inserted with force repeatedly.

   Boy Penis: Small soft balls that aren’t dropped yet. The scrotum is smooth and elastic with few wrinkles. Boys cannot produce cum/sperm at this age, but may dry orgasm without producing sexual fluids. Small body/shaft of the penis that very rarely gets hard, but can if experiencing stimulation or pleasure, which results in a very small erect penis

   Both girl and boy Butt: Small and stretchy, won’t fit more than 1-2 inch circumference into the anus easily. If they’re comfortable, no more than a finger will fit. Inside the anus, the rectum is very tight and soft, wet and clean. They can experience pleasure through the anus. Rectum will not fit anything bigger than an 1 inch circumference without serious laceration and bleeding, maybe death if it’s too large and inserted with force repeatedly. Breasts: Slightly protruding pillow soft chest, otherwise very flat. Nipples are barely discernible but are a depressed indent, the areola is slightly darker than the rest of the skin, but still barely discernible. May cause pleasure or tickling if stimulated. Hair: No pubic hair, no hair on whole body, except on the head. Form: Chubby, round, and puffy. Short limbs, big head. Texture: Smooth skin, silky hair

   Both boy and girl may experience pleasure and explore themselves, they will also learn what’s expected of them with their genitals. Pleasure may be described as a tickling sensation. Caressing in any sexual way by will be foreign to them, and may make them uncomfortable.

8. #8Early Childhood Stage

   Keys: 4, age: 3, 4 year old, , 3 year old, age: 4, , 4 year-old, 3 year-old, 3 yo, toddler, 3 years old, 4 years old

   Children 3-5 years old

   Girl

   • Hair: No pubic hair, but may have fine, soft body hair on arms, legs, and back, with the head hair now being longer and thicker.
   • Vagina: The Labia Majora is still small and in the form of 2 smooth parallel bumps concealing the Labia Minora and tender pink skin, The Labia Minora are flat, small and pale, only small ridges that arch above the vaginal opening. The vaginal opening has a thin hymen film covering it entirely. The clitoris is small and obscured by the clitoral hood, around 1/8 inch. Some sexual fluids or lubrication could be produced in the vagina, if hymen is broken and the girl is stimulated. If anything is inserted into the vagina, and the hymen is somehow broken, it should be no larger than a 0.75 inch circumference to avoid serious laceration and bleeding. Anything larger can cause significant harm, including potential death if too large and inserted with force repeatedly.

   Boy Hair: Same as the girl. no pubic hair but fine, soft hair may start to develop on arms, legs, and back. Head hair is likely cut short. Penis: The testicles have grown slightly, and the penis shaft has also grown but still gets hard infrequently, with slight erections occurring with pleasure. The scrotum is smooth and elastic with few wrinkles. Boys cannot produce cum/sperm at this age, but may dry orgasm without producing sexual fluids.

   Both girl and boy: Form: Children at this age still have relatively round faces and bodies, with short limbs, but their proportions are starting to become more slender. Texture: The skin is still relatively smooth, and their hair is soft and silkier. Butt: Slightly more formed and firm than in infancy but still delicate and small. The rectum remains very tight, wet, smooth and soft, with little tolerance for insertion. Any object larger than a 2-4 inch circumference can cause severe laceration, significant bleeding, or even death if inserted into the anus and is too large and is inserted with force repeatedly. Breasts: The nipple is now elevated rather than a depressed indent, with the areola starting to darken more, and become more saturated. Female breasts are flat, with only a slight protrusion, called 'budding'. Male breasts remain relatively flat, without tissue development.

   At this age, children may start to: Practice masturbation and experience pleasure from it. Describe pleasure as a tickle. Demonstrate a growing awareness of and curiosity about sex differences. Engage in sex play, such as playing "house" or "doctor" with other children. Copy adult behaviors and try to mimic adult actions, including sexual. Ask basic questions about sex, gender, and birth, such as "Where did I come from?" or "What is that?" Children may touch their own bodies or other children's out of curiosity, without understanding the meaning behind the actions.

9. #9Middle Childhood Stage

   Keys: 7 yo, 7 year-old, 6 year-old, 6 year old, 7 year old, 6 yo, age: 7, age: 6, 5, 5 year old, 5 yo, age: 5, 8 yo, 8 years old, 8, age: 7, 7 years old, 6 years old, 5 years old, 8, 8 year-old, age: 8, 8 years old, 8 yo

   Children 5-8 years old

   Girl Hair: Still no pubic hair, but body hair on arms, legs, and back may be slightly thicker and more noticeable. Head hair continues to grow longer and thicker. Vagina: The Labia Minora has grown slightly, now around 1/2 inch to 3/4 inch long, and is more defined and saturated. The Labia Majora begins to stretch and flatten out, hugging the crotch tighter. The vaginal opening is still covered by a thin hymen film, unless broken by insertion. The clitoris is still mostly obscured by the clitoral hood but is slightly larger, around 1/4 inch. The vagina may produce more lubrication. The hymen is still blocking the vaginal opening unless broken. The vaginal opening can fit something from 1 inch circumference at age 5, to 2.3 inch circumference at age 8, with a .4 inch radius of fluctuation between different girls. A finger may fit in the vagina now. Anything larger can cause significant harm, including potential death if too large and inserted with force repeatedly. They may start to explore inserting fingers into their own vagina or have a vague curiosity to, but it's unlikely unless they break their hymen, however, they still don't understand much.

   Boy Hair: Same as the girl - no pubic hair but slightly thicker body hair on arms, legs, and back. Head hair is likely cut short. Penis: The testicles continue to grow, and the penis shaft becomes slightly longer and thicker. Erections become more frequent, especially with pleasure or excitement. The scrotum is still smooth but may start to show more wrinkles. Boys still cannot produce cum/sperm at this age but may experience dry orgasms with more frequency. As their hormones start to become active boys may become more curious about their own genitals, explore masturbation and touching it in curiosity which typically peaks around this age before becoming latent, whereas women tend to start, and it builds: peaking around young teen.

   Both girl and boy Butt: The anus and rectum remain tight and delicate, but slightly more tolerant of insertion. The anus can fit something at max 4.2 inches in circumference at age 5, and 6.3 inches at age 8, but for most children it will be less. Anything larger than their individual limit will cause severe laceration, significant bleeding, or even death if inserted into the anus and is too large and is inserted with force repeatedly. Breasts: For girls, they have puffy but still flat chests with indiscernible budding. Boys still have flat chests with little to no tissue development. Form: Children at this age have more slender proportions, and their faces and bodies are less rounded. Limbs are growing longer. Texture: The skin is still relatively smooth, but may start to show more texture and resilience. Hair is thicker and more manageable.

   At this age, children may Start to form same-sex peer groups, showing a preference for playing and socializing with children of the same sex. Become curious about pregnancy and may ask questions about how babies are made and born. Pay more attention to gendered dressing and may start to show a preference for dressing in clothes that are more typically associated with their sex. Start to discover their sexual orientation, although they may not necessarily act on it or understand it fully.

10. #10Late Childhood Stage

    Keys: 10 year-old, 9 year old, age: 10, , 9 year-old, , age: 9, 10 yo, 10 year old, 9 yo, 9 years old, 10 years old

    Children 9-10 years old

    Girl Hair: Pubic hair may start to appear, but it is usually fine and soft, however, this and many other changes depend on the onset of puberty, which can happen anywhere between 8 and 14 years old. Body hair on arms, legs, and back is thicker and more noticeable. Head hair continues to grow longer and thicker. Vagina: The Labia Minora has grown to around 3/4 inch to 1 inch long and is more defined. The Labia Majora is stretched and flattened, hugging the crotch tighter. The vaginal opening is still covered by a thin hymen film, unless broken by insertion. The clitoris is slightly larger, around 1/4 inch to 1/2 inch. The vagina may produce more lubrication. The hymen is still blocking the vaginal opening unless broken. The vaginal opening can fit something from 2.4 inch circumference at age 9, to 2.9 inch circumference at age 10, with a .5 inch radius of fluctuation between different girls Anything larger can cause significant harm, including potential death if too large and inserted with force repeatedly.

    Boy Hair: Pubic hair may start to appear, but it is usually fine and soft, however, this and many other changes depend on the onset of puberty, which can happen anywhere between 8 and 14 years old. Body hair on arms, legs, and back is thicker and more noticeable. Penis: The testicles continue to grow, and the penis shaft becomes slightly longer and thicker. Erections become more frequent, especially with pleasure or excitement. The scrotum is starting to show more wrinkles. Boys may start to produce sperm as they enter puberty. The cremasteric reflex may now happen more often to relax and contract the scrotum to regulate testicle temperature, this is also known as the "balls dropping".

    Both girl and boy Butt: The anus and rectum remain tight and delicate, but slightly more tolerant of insertion. The anus can fit something at max 6.5 inches in circumference, but for most children it will be less. Anything larger than their individual limit will cause severe laceration, significant bleeding, or even death if inserted into the anus with force repeatedly. For girls, as puberty begins, the hips and buttocks may start to grow and become more rounded. Breasts: For girls, breasts may start to bud as puberty begins, becoming slightly tender to the touch. Boys still have flat chests with little to no tissue development, but may start to experience slight changes in their pectoral muscles and broader shoulders as testosterone increases during puberty. Form: Children at this age have more slender proportions, and their faces and bodies are less rounded. Limbs are growing longer and more muscular. Texture: The skin is still relatively smooth, but may start to show more texture and resilience, with acne and body odor becoming more common as puberty begins. Hair is thicker and more manageable.

    At this age, children may Start puberty between 8 and 14, leading to significant physical and emotional changes. Question their sexuality or gender as they develop a stronger sense of self. Want more privacy as they become more self-aware and sensitive about their bodies. Feel awkward about their changing bodies and may struggle to adjust to new physical sensations. Develop crushes on their peers and experience intense emotions about these relationships. Experience mood swings as hormonal changes affect their emotional regulation. Be more influenced by their peers, seeking to fit in and belong with their friends. Begin to masturbate as they explore their emerging desires and curiosities. Keep to their same-sex friends, forming strong bonds and cliques as they navigate social relationships.

11. #11Early Adolescence Stage

    Keys: 11 year old, 12 year-old, age: 11, age: 12, 11 year-old, 12 yo, 11 yo, 12 year old, 13, age: 13, 13 yo, 13 years-old,

    Children 11-13 years old:

    Girl: Hair: Pubic hair is likely to be more coarse. Hair begins to grow in the armpits. Body hair on arms, legs, and back is thicker and more noticeable. Head hair continues to grow longer and thicker. Vagina: The Labia Minora has grown to around 1-2 inches long and is more defined. The Labia Majora is more prominent, and the vaginal opening is more visible. The clitoris is slightly larger, around 1/2 inch to 3/4 inch. The vagina produces more lubrication, and the hymen may be broken due to physical activity or insertion. The vaginal opening is no maturing and depending on the girl, their vagina may fit anything between 2.5 to 5.5 inch circumference. Anything larger can cause significant harm, including potential death if too large and inserted with force repeatedly. When puberty starts, eventually a young girl will get her first period, which will happen for about 5 days (but can be 2-7 days) every month, usually at the same part of the month. A period is when the lining of the uterus falls sheds and causes bleeding after the release of hormones from the ovaries, which bleeds down into the vaginal opening and making a general mess of things. It can cause cramps, cravings, and a general feelings of malaise, depression, and anxiety. Breasts: Breasts are more developed, with a more noticeable shape and size. The areola is larger, and the nipple is more prominent. Breast development can vary significantly among girls, they might not even start to grow until past 13. Butt: The anus and rectum are still delicate, but more tolerant of insertion. Depending on the girl, the anus could fit something from 3 to 7.5 inch circumference. Severe laceration, significant bleeding, or even death can happen if anything is inserted into the anus and is too large and is inserted with force repeatedly. The hips and buttocks become more rounded and developed.

    Boy: Hair: Pubic hair is likely to be more noticeable and coarser. Armpit hair may begin growing. Body hair on arms, legs, and back is thicker and more noticeable. Penis: The testicles are nearly fully developed, and the penis shaft is longer and thicker. Erections are more frequent, especially with pleasure or excitement. The scrotum is more wrinkled, and the testicles are producing sperm. The cremasteric reflex now happens often to relax and contract the scrotum to regulate testicle temperature, this is also known as the "balls dropping". Breasts: Boys' chests are still relatively flat, but may have some slight development of breast tissue, which is a normal part of puberty. Butt: The anus and rectum remain tight and delicate, but slightly more tolerant of insertion. Depending on the boy, the anus could fit something from 3 to 7.5 inch circumference. Severe laceration, significant bleeding, or even death can happen if anything is inserted into the anus and is too large and is inserted with force repeatedly. Both girl and boy: Form: Children at this age have more slender proportions, and their faces and bodies are less rounded. Limbs are growing longer and more muscular. Boys are developing broader shoulders, while girls are developing wider hips. Texture: The skin is still relatively smooth, but may start to show more texture and resilience, with acne and body odor becoming more common as puberty progresses. Hair is thicker and more manageable.

    At this age, children may: Be well into puberty, experiencing significant physical and emotional changes. Continue to question their sexuality or gender as they develop a stronger sense of self. Want more independence and autonomy, seeking to make their own decisions about their bodies and lives. Feel more confident about their changing bodies, but may still struggle to adjust to new physical sensations. Develop stronger crushes on their peers and experience more intense emotions about these relationships. Experience mood swings as hormonal changes affect their emotional regulation. Be more influenced by their peers, seeking to fit in and belong with their friends. Continue to masturbate as they explore their emerging desires and curiosities. Keep to their same-sex friends, forming strong bonds and cliques as they navigate social relationships.

12. #12Adolescence Stage

    Keys: , 14 yo, 14 year old, age: 14, 14 year-old, 15, age: 15, 15 years old, 15 yo, 15 year-old, 16, age: 16, 16 year-old, 16 years old, 16 yo, 17, age: 17, 17 year-old, 17 years old, 17 yo, 18, age: 18, 18 year-old, 18 years old, 18 yo,

    Young Adults 14 and up

    Girl Hair: Pubic hair is now fully developed and coarse. Body hair on arms, legs, and back is thicker and more noticeable, but still relatively fine compared to men. Armpit hair may begin to grow in. Head hair is typically at its thickest and longest. Vagina: The Labia Minora and Labia Majora are fully developed, and the vaginal opening is more visible. The clitoris is larger, around 3/4 inch to 1 inch. The vagina produces more lubrication, and the hymen is often broken due to physical activity, tampon use, or insertion. If anything is inserted into the vaginal canal, it can be from a 3 to 7 inch circumference! Above that without training, or treated roughly will cause lacerations, bleeding, and maybe death. Breasts: Breasts are fully developed, with a more noticeable shape and size. The areola is larger, and the nipple is more prominent. Breast development can vary significantly among women. Butt: Depending on the girl, the anus could fit something from 4 to 9 inch circumference. Bigger than their limit, or rough treatment can still cause discomfort, pain, and potential injury if inserted into the anus. Girls' asses continue to collect the excess fat and become more full and round.

    Boy Hair: Pubic hair is now fully developed and coarse, but other body hair, such as chest and back hair. New body hair may not stop growing until around age 21. Body hair on arms and legs is thicker and more noticeable, and armpit hair is has started to grow in.. Penis: The testicles are fully developed and the scrotum is dropped to regulate temperature for the testicles. And the penis shaft is at its adult length and thickness. Erections typically become more controlled, but still happen with stimulation or excitement. The scrotum is more wrinkled, and the testicles are producing mature sperm that can potentially impregnate a woman who has past her first period. Breasts: Well-developed pectoral muscles. Butt: Depending on the boy, the anus could fit something from 4 to 9 inch circumference. Bigger than their limit, or rough treatment can still cause discomfort, pain, and potential injury if inserted into the anus.

    Both girl and boy: Form: Young adults have more slender or muscular proportions, and their faces and bodies are more defined. Limbs are at their adult length, and muscles are more developed. Texture: The skin is more textured and resilient, with potential acne and body odor still present. Hair is thicker and more manageable.

    At this age, young adults may: Have fully developed physically and be at their adult height and weight. Be more confident and independent, making their own decisions about their bodies and lives. Experience more intense emotional relationships, including romantic and sexual partnerships. Be more aware of their own desires and boundaries, and communicate these more effectively. Continue to explore their identity, including their sexuality and gender expression. Develop long-term, committed relationships, including marriages and partnerships. Begin to consider family planning, including children and long-term career goals.

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