The Miracle of Birth

An adolescent daughter asks her mother, "Mom, we've been studying sex education and childbirth in school, and I'm kind of worried about the whole thing. I mean, is it terribly painful to have a baby?"

"Well," her mother replies "I'll give you an idea of how painful it is and you can judge for yourself: put your top lip between your teeth and bite down like you're chewing on a piece of gum..."

The daughter complies, and a moment later she announces, "Oh, well that's not too bad."

"...Okay, now,"continues her mother "pull your lower lip all the way over the back of your head like a shower cap!"