It’s just coming up to closing time at the boozer and last hours have been called. As the landlord is collecting the pots, a tramp walks into a pub and asks the landlord for a cocktail stick. So the landlord gives the tramp a cocktail stick and so the tramp promptly leaves. A few minutes later another tramp wanders in and also asks for a cocktail stick and the landlord obliges.
A little while after yet another tramp walks in and asks for a straw. The landlord enquires “Why do you want a straw when the other tramps asked for cocktail sticks?” The third tramp replies “Well, somebody’s been sick outside your pub and all the good bits have gone.”