For most parents this may be more elementary than they need, but use of real anatomic names for the male anatomy and female reproductive anatomy can help children think of their sex organs as normal body parts, not something to be ashamed of or be unable to talk about. You’d never make up silly words for your ear, nose, hand or foot and act like those words were somehow not to be used. So why use terms like pee-pee for penis or “down there” for a girls genitalia.
I strongly suggest using real anatomic names for the genitals from an early age and using these words as matter-of-factly as possible. This has several advantages. It allows your child to realize that you know what you are talking about. It also protects your child in the case of abuse by giving them the language to accurately describe events. More importantly it makes this anatomy no more and no less important than the rest of the anatomy that they learn about as they develop language skills.
Here are some sex education terms that every child should know as human body parts:
Penis: the male external sex organ that urine and semen flow through.
Testis/testes or testicle/testicles: the sperm and hormone producing male sex organs that are located in the scrotum.
Scrotum: The sac that holds the testes.
Vagina: the birth canal that is located behind/below the urethra where the urine comes out.
Clitoris: the female equivalent of the glans penis. The clitoris is the organ that gives sensitivity and sexual pleasure to women.
Cervix: The opening of the uterus that protrudes into the back of the vagina.
Uterus: the womb, or organ where a fertilized egg implants, develops and grows prior to childbirth.
Breast: The mammary gland that humans, like all other mammals, have is a mild producing organ in females. Obviously females have much larger breasts than males, in order to be able to produce milk.