A young boy approaches his father and asks, "Hey, Dad, do you know how old I am today?"

"No, son, how old are you?"

"I'm eleven!" says the proud, young boy.

Then, the young boy goes into the kitchen and asks his grandmother, "Hey, Grandma, do you know how old I am today?"

"Come closer, dear."

The young boy obliges. The grandmother unzips his pants and reaches her frail arm into his underwear. She fondles him for a brief minutes and then says, "You're eleven, dear."

"How could you tell, Grandma?"

"I heard you tell your father, dear."