This Texan walks a bar and taps an Irishman on the shoulder. He says, "I hear tell you Irishmen are hard drinkers. Well, I'll bet you ten bucks ya'll can't do this."
The guy orders ten beers, then gulps them all down, one after the other. When he's finished, he turns to the Irishman and says, "Try that."
Instead, the Irishman gets up and runs out of the bar. The Texan laughs and considers himself the winner.
Fifteen minutes later, the Irishman walks back into the bar, taps the Texan on the shoulder, and asks, "Hey, pal, that bet o' yours still stand?"
The Texan shrugs and says, "Sure."
So the Irishman orders ten beers and immediately slams them all down.
While the Texan forks over the money, he says, "You know, I thought ya'll were runnin' out on the bet. How come you left?"
The Irishman says, "Oh, I wasn't sure I could do it, so I went to another pub to practice first."