A texan walks into an Irish pub and lays $500 on the bar, "I hear you Irish are big beer drinkers, this is for anyone that can drink 10 pints of Guinness back to back."
Nobody makes a move except for one little guy that gets up shrugging his shoulders and walks out.
Five minutes later he is back and taps the Texan on the shoulder, "Is the bet still on?" he asks.
Ten Guinness are lined up and he quickly downs them one after the other.
As the Texan is handing him the $500 he asks where he went before taking the bet.
The guy replies, "Pub next door, just wanted to check if I could actually do it."
Nothing beats reassurance when in doubt