Scrotum

A daughter asked her mother, "Mom, how do you spell 'scrotum'?" Her mom replied, "Honey, you should have asked me last night, it was on the tip of my tongue.”

Parental Dictionary

Parent's Dictionary of Meanings
Dumb Waiter: One who asks if the kids would care to order dessert.
Feedback: The inevitable result when the baby doesn't appreciate the strained carrots.
Full Name: What you call your child when you're mad at him.
Grandparents: The people who think your children are wonderful even though they're sure you're not raising them right.
Hearsay: What toddlers do when anyone mutters a dirty word.
Independent: How we want our children to be as long as they do everything we say.
Ow: The first word spoken by children with older siblings.
Puddle: A small body of water that draws other small bodies wearing dry shoes into it.
Show Off: A child who is more talented than yours.
Sterilize: What you do to your first baby's pacifier by boiling it, and to your last baby's pacifier by blowing on it and wiping it with saliva.
Top Bunk: Where you should never put a child wearing Superman jammies.
Two-Minute Warning: When the baby's face turns red and she begins to make those familiar grunting noises.
Verbal: Able to whine in words.
Whodunit: None of the kids that live in your house

Different Balls

A young couple had identical twin sons and nearly everyone had a heck of a time telling them apart. An aunt asked the mom if she had any problems distinguishing the two lads, and the mother replied, "No, I can tell them apart by their balls. One bawls all night, the other bawls all day!"