This old wino staggers into a bar and the barman immediately told him to get out. The tramp said that he would only leave if the barman gave him a cocktail stick. The barman, thinking this was a fair exchange, gladly gave the man a cocktail stick and watched him stagger back outside.
A minute later another old wino walked into the bar and got asked to leave by the barman. This drunk also demanded a cocktail stick if he was to leave quietly. There had been no trouble the first time so, once again, the barman obliged and the old drunk quietly left.
Soon after, a third wino came into the barman and without hesitation the barman offered him a cocktail stick to leave. This time though the drunk turned him down and said he would only leave if the barman gave him a drinking straw.
Curiosity finally got the better of the barman and he asked the old drunk why he wanted a drinking straw when the other two drunks had asked for cocktail sticks. The wino said "Well, someone was sick outside and all the lumpy bits have gone now!"