Little Sarah came home from school one day, ran straight to the bathroom, and started to cry. Her mother went in and asked what was wrong.
"Well," replied Sarah, "we just learned in health class that the baby comes out where the boy's penis goes in. Is that true?"
"Sure, honey, but that's nothing to cry about," said her mother. Sarah replied, "But when I have Johnny's baby, I'm afraid it'll knock out my teeth!"