I do feel a bit wrong typing this
hopefully not already been told:

A young boy runs into the kitchen where his mother is busy making dinner.
"Mommy Mommy! Grandma is playing with her shrimp!!"
"Of course dear. Please go find something else to do"
So the boy, a bit dejected, walks out only to come running back into the room again:
"Mommy Grandma is still playing with her shrimp!"
So, curiosity gets the best of her and the mother goes into the living room with her son. Sure enough there's Grandma, playing with herself.
"Oh honey, that isn't a shrimp, that is called a clitoris."

"Oh." said the boy, "Well it sure tasted like shrimp!"
(Babbeyroad, Thu 2 Feb 2006, 1:44, Reply)