A duck walks into a bar and asks: Got any Bread?
Barman: No.
Duck: Got any bread?
Barman: No.
Duck: Got any bread?
Barman: No, we have no bread.
Duck: Got any bread?
Barman: No, we haven't got any bread!
Duck: Got any bread?
Barman: No, we haven't got any bread, and if you ask me again and I'll nail your beak to the bar!
Duck: Got any nails?
Barman: No.
Duck: Got any bread?