A duck walks into a store.
Duck: Got grapes?
Store owner: Nope.
Duck walks out. Walks back in.
Duck: Got grapes?
Store owner: NO! I already told you! No grapes!
Duck walks out. Walks back in.
Duck: Got grapes?
Store owner: NO! I have no grapes! And if you come back in here one more time asking for grapes I am going to nail your webbed feet to the floor!
Duck walks out. Walks back in.
Duck: Got nails?
Store owner: Nope.
Duck: Got grapes?