A man is travelling through the desert when he comes upon an Indian lying on
the ground stark naked with a hard-on sticking straight up in the air. He
asks the Indian what he is doing, to which the Indian replies, "I'm telling
the time." The man tells the Indian that he doesn't believe it, so the
Indian tells him that it is 1:00. The man looks at his watch and is amazed
to find that it is exactly 1:00.

He travels a bit longer until he comes upon another naked Indian lying on
the ground with a hard-on sticking straight up. He asks this Indian what he
is doing and he too replies that he is telling the time. He tells the Indian
to prove it and the Indian tells him that it is 2:00. The man looks at his
watch and once again is amazed that the time is correct.

He continues his trek through the desert until he comes across an Indian
lying naked in the sand, masturbating. He asks this Indian, "And what the
hell are you doing?" To which the Indian replies, "I'm winding my watch."