Binky is to blame for this one:

A Texan walks into the bar and clears his voice to the crowd of drinkers. He says, “I hear you Geezers are a bunch of drinkin’ fools. I'll give $500 American dollars to anybody in here who can drink 10 pints of Murphy's back-to-back.”
The bar is quiet and no one takes up the Texan’s offer. One DG even leaves. Thirty minutes later, the same DG who left returns and taps the Texan on the shoulder.
“Is your bet still good?” he asks.
The Texan says “Yes,” and he asks the bartender to line up 10 pints of Murphy's.
Immediately, the DG tears into all 10 pints of beer, drinking them all back-to-back.
The other Geezers cheer as the Texan sits down in amazement. The Texan gives the DG the $500 and asks, “If ya don’t mind me askin’, where did you go for that 30 minutes you were gone?”
The DG replies, “Oh... I had to go to the pub down the street to see if I could do it first.”