A duck walks into a bar and says to the barman: "You have breadcrumbs?!"
The barman replies that he is sorry but he hasn't any handy.
The duck says: "you have breadcrumbs?!"
The barman says: "Look I haven't any breadcrumbs"
The Duck says: "you have breadcrumbs?!!!!" and continues to ask for breadcrumbs doesn't matter what the barman says.
Later on, the barman has had enough and says to the Duck: "Look here Duck......if you ask me one more time I'll nail your beak to the bar counter!!!!!!!!"
The Duck then says: "You have any nails?"
The barman says: "No..."
The Duck again: "You have any breadcrumbs?"