Tell me a joke

[Perfect Stu]

A Duck walks into a hardware store and approaches the front desk. It looks at the manager and asks "Do you have any grapes?" and the manager looks back at him in confusion and answers "uh...this is a hardware store. we don't sell food of any kind, let alone grapes". The duck turns around and walks out. The next day the duck returns and asks the manager for some grapes. "Look," the manager said, "we don't have any grapes. No grapes. Please don't ask again". The next day, the same thing. "Listen, duck. If you come back here ONE more time and ask for some grapes, I will nail your beak to this desk." The duck nods and leaves. The very next day, the duck walks back in and asks "Do you have any nails?" and the manager goes "Funny you ask, we actually just ran out". "In that case," the duck says, "do you have any grapes?".