God: Adam, Eve, I have a very important decision for both of you to make. Throughout the day I have created the beasts of the land and have bestowed upon them traits and abilities. I have given flight to the birds, speed to the cheetah, the ability to breathe underwater to the fish of the sea, and so forth.
Now I have only two traits left, one for each of you. You get to choose between yourselves which one you will take for your gender.
Eve: So what do we have to choose from?
God: The first is the ability to pee while standing up and the-
Adam: OH OH OH! THAT ONE! I WANT THAT ONE!
God: Very well. Adam, you and every man after you will urinate standing up. Eve you get multiple orgasms.