A guy walks into a bar

Tells the bartender "I'll bet you $100.00 I can chug your biggest pitcher of beer in less than 10 seconds"
Bartender gives him a gallon pitcher and the guy chugs it in 9 seconds so bartender pays him.
A little while later the guy says "I'll bet you another $100.00 I can chug two of those pitchers in less than 10 seconds"
Bartender figures the first time took 9 seconds so takes the bet. Sure enough the guy slams two gallons in 9.5 seconds. A little while later he calls the bartender back over - this time the bartender says "I'm done betting with you"
The guys says "here me out, the bet is $500.00 you take your smallest shot glass, place it 4 feet in front of me on the bar, I will stand on the bar and piss in it, fill it to the top and not spill a drop"
Bartender says "you're on!" - places the shot glass, the guy stands on the bar and pisses everywhere, not a single drop in the glass. As the bartender collects his winnings and is laughing as he is wiping up the piss he sees the guy smiling. The bartender asks "hey, what's up, I just won back my $200.00 plus another $300.00 and you seem happy"
The guy replies "well yeah, you see that guy over in the corner crying? Well I bet him $2,000.00 that I would stand up, piss all over your bar and you would wipe it up with a smile!"