One confused teenager!

A teenager comes home from school and asks her mother, "Is it true what Rita just told me? Babies come out of the same place where boys put their d*cks?"

"Yes, dear", replies her mother.

The mother is pleased that the subject had finally come up and she wouldn't have to explain it to her daughter...

"But then when I have a baby", responded the teenager, "won't it knock my teeth out?"