Boys have penises because they are boys. Girls do not have them. The penis is there for urination. It differentiates the boys from the girls. Later in life during puberty, the penis develops, giving another use. It can be used for sexual intercourse with the opposite sex. This is for making babies. He can also use it for masturbation, in place of intercourse. That will give him self satisfaction without involving a partner.
Girls don't have penises. Girls and boys are different that way.
penises and vanginas
boys have penises girls have vaginas
girls have a vagina and boobs and boys have penises.
Girls don't get erections, because they don't have penises. Only boys get erections.
No, This sort of behavior would not be acceptable in public.
"boys have penises, girls have vaginas" -- The kid from kindergarten cop
Why do you think! Look boys have penises and girls have pussies plus when a girl gets her period the panties helps from getting blood on there clothes! OK!
Penises.
So they can impregnate a female. And it's spelled penis.
Who says that they are? I am sure that Japanese boys' penises show just as much variation in length as do the penises of boys from other countries.
This is typical boy behaviour. They do this as it takes the spotlight of their own size. There are boys with small penises when flaccid that have large erect penises, and vice versa.