God had just created Adam and Eve. "Welcome to the World," He said. "I have a birthday present for each of you. You get to choose who gets what."
"What are they, huh, what are they?" said Adam.
"Well," God said, "One is, I give you a little hose to pee through, so you can pee standing up."
"Oboyoboy," said Adam, "Pee standing up--I want that one!"
"OK, you got it," said God. "Eve gets the multiple orgasms."