Hedgehog
One day Little Johnny ran into the bathroom while his mother was just getting out of the shower.
“Mommy, where’s your little willy?”
“Well, Johnny, only boys have willies. Girls have hedgehogs.”
The next day, Little Johnny ran into the bathroom again, but this time, his grandmother was just getting out of the shower. Granny tried to cover herself quickly, but Little Johnny said, “It’s okay, Mommy already told me about willies and hedgehogs… but how did yours die?”
“Why do you think it died?” Granny asked.
Johnny replied, “‘Cause it’s tongue is hanging out!”