Crossing the Nile

Three blondes want to cross the Nile. A magic goldfish offers each of them a wish.

The first one wishes to swim fast. She gets to the middle of the river and the crocodiles eat her. The second one wishes to swim faster. When she gets to the middle, the crocodiles eat her. The third blonde wishes to become a man. The goldfish turns her into a man, and he says, "Thank God there's a bridge here."