[Heard from my mother. I'm not sure where she heard it.] A woman wants to enlarge her breasts, but she can't afford the cosmetic surgery. Her husband suggests she rub toilet paper between her breasts a couple of times a day for a few weeks. She tries it for a while, but without avail. One day, she is discussing the matter with her husband. "I just don't understand it," he says. "Look what it did for your butt."
(From the "Rest" of RHF)