"Well, that's pretty much the rule for any sausage," Rincewind agrees, having met Dibbler and his doppelgangers in far too many places for it to be coincidence. "But I'll tell him. Um," he goes on, looking nervously at the shelves behind the bar, "I don't suppose the bananary stuff has gotten used in the last day or so?" He's hoping it won't be on the top shelf.