Add Yahoo as a preferred source to see more of our stories on Google. Why it matters that kids learn the right terms for their body parts — including the difference between the vulva and the vagina.

Add Yahoo as a preferred source to see more of our stories on Google. It's important to use anatomical terms when discussing the body with kids. (Photo: Getty Creative stock photo) (MoMo Productions ...

Question: My 3-year-old calls his penis his "wee-wee," but my sister says he should learn the correct term for it. I think "penis" sounds too clinical, and I also don’t want him going around talking ...