After a while, the dad gets up to get a beer as the ringmaster parades the elephants out.
"Mommy, Mommy! What's that long pointy thing under the elephant's belly!?" the kid asks.
The mom turns red and says, "Oh, that's nothing, dear."
The dad comes back with his beer and sits down next to his boy. Then mom gets up and goes to the washroom.
"Daddy, daddy! What's that long pointy thing under the elephant's belly!?"
"That's the elephants penis." he replies.
"But mom said it was nothing!"
The dad takes a long swig of his beer, pats his boy on the head, and says,
"Son, I've spoiled that woman..."