Chap's Granny dies and finds herself at the pearly gates. St. Pete welcomes her in and proceeds to give her a tour to acquaint her with her new surroundings. Granny notices a vast area in a side direction that is filled with enormous clocks.
"Hey, Pete. What's with all those clocks over there?"
"Well, Granny, those clocks are actually metering devices. There's a clock for each person on Earth. Every time a person masturbates, the minute-hand moves one tick. Don't worry, Granny, your clock, didn't show any more hours than most clocks."
Granny, relieved of her own embarrasment, suddenly thinks of her beloved Grandson.
"Pete, where's my little Chappy's clock?"
"Uh..., Granny, it's in the Main Square... we use it for a fan."