Jon was looking for a little "action." He met a young woman at a bar and took her back to his hotel room, unaware that she was nearly a nymphomaniac.
After six rounds of sex, she was still screaming for more. Following the eighth time, Jon excused himself, saying he needed to slip out to buy a pack of cigarettes.
On his way out, he stopped at the men's room. Standing before the urinal, he unzipped his pants and felt a moment of panic when he couldn't find "it."
After fumbling for a couple of minutes, he finally said, "Look, it's okay. She's not here!"