Duck in a Bar

A Duck walks into a bar.
Duck: You got any bread?
Barman: No, sorry, we don't have any bread[After a few minutes]
Duck: You got any bread?
Barman: Look, we don't have any bread[In a little while]
Duck: You got any bread?
Barman: We don't have any F*****g bread![Some time later]
Duck: Got any bread?
Barman: If you ask me if I've got any F*****g bread once more I'm
gonna nail your F*****g bill to this bar......
Duck: You got any nails?
Barman: NO!
Duck: You got any bread?