Diane was a beautiful girl. As she was walking down the lane one hot summer's day, the heat became so unbearable that she decided to go for a swim. She took off her clothes, piled them neatly on the side of the riverbank, and dived in.
A couple of young boys came along and decided to steal her clothes. It grew dark, and Diane just couldn't stay in the water any longer, so she went to the side of the road and decided to hitch a ride home. Along came Mike, riding a bicycle.
He stopped for Diane. "Come," he said. "I'll drive you into town." She jumped in front of his bicycle seat for the ride.
Mike said nothing, but after ten minutes Diane was so overwhelmed at how cool he was that she said, "Tell me, haven't you noticed that I'm completely naked?"
"Sure," said Mike. "Haven't you noticed that you're riding on a girl's bicycle?"