A duck walks into a bar one day. He walks up to the bartender and asks if he has any grapes. The bartender replies no and the duck leaves. The next day the duck walks into the bar again and asks the bartender if he has any grapes. The bartender again says no and the duck leaves. The next day the duck walks back into the bar and asks the bartender if he has any grapes. The bartender replies and says, "I've told you before, I don't have any grapes and if you come back in here I'll stab you with a knife." The duck says ok and leaves. The next day the duck walks into the bar and asks the bartender, "Do you have a knife?" The bartender says, "No." The duck replies, "Ok, do you have any grapes?"
