I remember working at the grocery store when I was younger and some old lady came in looking for the Charmin Toilet paper that was on sale. The only color left on the shelf was white. She was having a hissy fit with the store employee that she wanted blue, not white. Anyway, the manager (who was always drunk) came by and got into the discussion. She started to yell at the manager about not having blue toilet paper. The manager said real nicely. "Do you think your butt can tell the difference?" She stared at him for about 20 seconds with her mouth wide open. Turned around and quickly left the store. Everyone in the store congragulated him including many customers who heard the comotion.