Bob Dyer wrote in his Akron Beacon Journal column about this man who bought his daughter a souvenir of a cross country meet that she had just run. It had a saying on the back:"How's my running? Call 1-800-EAT-DUST." This is sort of a takeoff on a somewhat popular bumper sticker.
It seems that this number is already in use as a transvestite porn line.
Brings to mind the movie "The Santa Clause," when Tim Allen quipped that his ex-wife's husband, a psychologist, could be reached at "1-800 SPANK ME." That number was also actually in use as a porn line.
You have to be careful about seemingly innocent jokes with today's technology.
Cliff Note: If you click on the link, the story will be halfway down in the column, but read the whole column as Bob Dyer is one of the more talented writers in this area.