Duck Food
A duck walks into a bar and says to the bartender, “Do you have any duck food?” The bartender yells at him, “No, you stupid duck. This is a bar. Of course we don’t have any duck food. Now get out of here, and don’t ever come back!”
The next day the same duck walks into the same bar, and says to the bartender, “Hey, do you have any duck food?” The bartender yells at him, “No! I told you yesterday this is a bar and we don’t have any duck food. If you come back in here one more time, I’m gonna nail those stupid little webbed feet of yours to that barstool! Now get out and don’t come back!”
The next day the duck walks into the bar yet again. This time he says to the bartender, “Hey, you got any nails?” The bartender yells, “Of course we don’t have any nails, this is a bar!” So the duck says, “Got any duck food?”