A hobo, all rags and dirty face walks into a fine restaurant. He approaches the waiter and politely asks: "Excuse me, Sir. I know I don't belong here, but may I ask you for a fork, please?" The waiter, obviously relieved the hobo doesn't intent to stay, agrees and gives him a fork. The hobo thanks the waiter and leaves with his fork. Only seconds later however, another hobo, even dirtier than the first one comes in and also, very politely, asks the waiter for a fork. "Well, it's not like we're short on forks, so here you are." Thus, the second hobo thanks the waiter and leaves. About a minute later, you guessed it, a third hobo, smelling worse that the other two combined walks in and approaches the waiter, who, after his previous encounters belives to have grasped the concept, asks him: "Let me guess, you would also like to have a fork?" "Oh, that's very kind of you," the hobo replies, "but may I ask for a drinking straw instead?" "Of course," the somewhat baffled waiter says, "but tell me, why do you want a straw, when the other two have both asked for forks?" "Well, you see, someone threw up around the corner, and all the good bits are already gone." (ESL, translated it the best I could...)