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.


[Finally, after a few more minutes]

Duck: You got any nails?
Barman: NO!
Duck: You got any bread?