A Texan man walks into a pub in Ireland.
He clears his throat and announces to the people inside, "Right, I hear y'all's a bunch of heavy drinkers, so here's what I'm gonna do. I'm gonna give a cheque for one hundred American dollars to anyone who can drink ten pints of your Guinness back to back".
No one speaks up. Gradually the conversations start back up and one man gets up, picks up his coat and walks out.
20 minutes later he stumbles back in the door, walks up to the Texan and says "Is y…