A pub landlord is busy clearing up his pub after chucking-out time, as the customers have managed to make one hell of a mess whilst they were in the pub.  Shortly after locking up he hears a knock at the door.  He stops what he's doing and opens the door, only to see a tramp standing on the doorstep.

"What do you want?" said the landlord.  "The pub closed five minutes ago - there'll be no more drinks served here tonight."

"Can I have a toothpick please?" replied the tramp.

The landlord thinks it's a bit of a strange request, but he gets a toothpick anyway and gives it to the tramp, who thanks him for the toothpick and then shuffles away.

The landlord then closes the door and goes back inside to carry on cleaning up, but just five minutes later there's another knock at the door.  When he opens the door there are two tramps standing there.

"Good evening" says the first tramp. "Could I have a toothpick please?"

"And one for me as well, please" chimes in the second, not wanting to be forgotten.

The barman gets two more toothpicks, gives one to each tramp, then closes the door and gets back to cleaning up.  He's only been cleaning up for another five minutes when there's a knock at the door again.  The landlord opens the door to see yet another tramp on his doorstep.

"Don't tell me" says the landlord.  "You want a toothpick, right?"

"No" says the tramp.  "Could I just have a straw please?"

The landlord gets the tramp a straw and gives it to him, but just before the tramp goes to leave the landlord says to him "You're the fourth tramp I've spoken to since chucking-out time this evening, but the other three tramps I spoke to all asked for toothpicks.  Why did you ask for a straw?"

And with that the tramp replies "Well, some drunken idiot was sick outside your pub a quarter of an hour ago, but the best bits have all gone now..."