Funny joke I heard once.

A whino is walking down the sidewalk and sees a 5 dollar bill in front of a gay man. The gay man says "I'll give you the 5 bucks if you let me screw you.".
The whino just walks away.
Later, the whino drinks some cheap booze, gets drunk, and falls asleep.
The gay guy screws him in his sleep and leaves the 5 bucks.
The whino wakes up the next morning. His ass hurts a little, but he thinks nothing of it.
He walks into a grocery store, and buys their cheapest beer.
He drinks it, gets drunk, and falls asleep.
The gay guy brings about 20 of his friends and they all screw the whino in his sleep, and they all leave 5 dollar bills.
The whino wakes up the next morning with his ass in agony.
He goes to the grocery store again and asks for their most expensive beer. They ask him "What's wrong with the cheap stuff?".
He replies "The cheap stuff makes my ass hurt.".