Two nerds meet on campus one day.
The first engineer calls out to the other, "Hey -- Nice bike! Where did you get it?"
"Well," replies the other, "I was walking to class the other day when this pretty, young co-ed rides up on this bike. She jumps off, takes off all of her clothes, and says 'You can have ANYTHING you want!!' "
"Good choice," says the first, "her clothes wouldn't have fit you anyway."