Just thought this was cute..

We gave our friend Bill, a jogger, a T-shirt that read, "I'm single" on the front and "For more information..." on the back, and we included a phone number.

Sure enough, a few months later Bill brought over his new girlfriend to meet us. When he removed his jacket, we saw that he was wearing the T-shirt. He turned around and announced his engagement by showing us the back of the shirt.

Added to the original message was, "Offer expires..." followed by their wedding date.