The Difference Between Moms & Dads

A mother and little boy are visiting the zoo. They pass by the elephant enclosure  when suddenly the elephants walk out into the open. The little boy says to his mother,  "What's that?"  "That's the elephant's tail," she replies.  "No, under the tail," says the youngster.  The mother is clearly embarrassed and says, "Oh, that's nothing." She quickly  leads him away. Sometime later, the boy is taken to the zoo by his father, and as they pass the  elephant enclosure the child points again and asks his dad: "What's that?' His father looks and says, "That's the elephant's penis, son."  "But mum said it was nothing!" said the boy.  The father smiles, draws himself up to his full height and says, "Son,  I've spoiled that woman."