A man is walking through the desert looking for water. He sees a naked man on his back with a hard on. He asks the naked man what he is doing. "Telling the time, this how we do it out here" Comparison of our man's wristwatch and the erect organ reveal the latter to be quite accurate. Having got directions to the oasis our man walks on. He then sees another figure hunched in the sand dunes; looking over his shoulder he sees that this man is wanking furiously. "What are you doing!?' "Winding my watch, what's it fucking look like?!"