A guy walks into a bar acting all macho as he goes up to the bartender and asks for his strongest drink.
Feeling that this guy is trying too hard to be macho, the bartender decides to have some fun with him.
Bartender: You look like the daring type.
Guy: Well, I certainly don't shy away from things.
Bartender: Want to take a dare?
Bartender: See that spittoon over there.
Bartender: I'll give you $50 if you take a drink from it.
Guy: (looking kind of sick) Uh....
Bartender: Well, now if you're not up...
Guy: (Interrupting) Now I didn't say that. I'll take your dare.
The guy walks over to the spittoon, picks it up, pauses for a while, closes his eyes, then lifts it to his mouth and takes a drink.
The bartender is astonished as he didn't expect him to go through with it.
Bartender: Okay, okay, you won the $50; you can stop now.
But the guy keeps drinking from it.
Bartender: You can stop now! I'll give you $100 to stop.
But the guy keeps drinking.
Bartender: You're grossing out my customers; I'll give you $200 to stop drinking.
Finally the guy puts down the spittoon and walks back to the bar.
Bartender: Why didn't you stop when I told you to?
Guy: I would have liked to, but I got it all in one string.