A duck walks into a shoe shop, goes up to the counter and says to the shopkeeper: "Hello! Have you got any grapes?"
Shopkeeper looks a bit puzzled, but says: "No - we're a shoe shop. But if you got out of the door and turn left, there's a fruit and veg stall about a minute away. Or you could try one of the supermarkets - there are a few along the high street."
And the duck says: "Ok. Bye bye."
Next day, at about the same time, the duck walks into the shoe shop, goes up to the counter and says to the shopkeeper: "Hello! Have you got any grapes?"
Shopkeeper looks even more puzzled, and says: "No - we're a shoe shop. We sell shoes. You came in yesterday. You should try the stall or the supermarkets."
And the duck says: "Ok. Bye bye."
Next day, at about the same time, the duck walks into the shoe shop, goes up to the counter and says to the shopkeeper: "Hello! Have you got any grapes?"
Shopkeeper's getting pretty pissed off by now, but retains some cool and says: "No. We don't sell grapes. We sell shoes. We're a shoe shop. Clue's in the name. If you want grapes, you need to go somewhere that sells grapes. Like I said."
And the duck says: "Ok. Bye bye."
Next day, at about the same time, the duck walks into the shoe shop, goes up to the counter and says to the shopkeeper: "Hello! Have you got any grapes?"
This time, the shopkeeper loses his shit, and says: "LOOK. I'VE ALREADY TOLD YOU. THIS IS A FUCKING SHOE SHOP. WE SELL SHOES. WE DON'T SELL GRAPES. DO. YOU. UNDERSTAND?"
And the duck says: "Ok. Bye bye."
Next day, at about the same time, the duck walks into the shoe shop, goes up to the counter and says to the shopkeeper: "Hello! Have you got any grapes?"
Well, that's it. The shopkeeper can't contain himself: "RIGHT. IF YOU COME IN HERE ONE. MORE. FUCKING. TIME. AND ASK IF I SELL GRAPES, I'M GOING TO NAIL YOUR FUCKING FEET TO THE FUCKING FLOOR!"
And the duck says: "Ok. Bye bye."
Next day, at about the same time, the duck walks into the shoe shop, goes up to the counter and says to the shopkeeper: "Hello! Have you got any nails?
The somewhat bemused shopkeeper replies: "No..?"
And the duck says: "Ok. Have you got any grapes?"