LIE DETECTOR

An Englishman, an American and a Sardarji are called upon to test a lie detector. The Englishman says: "I think I can empty 20 bottles of beer". BUZZZZZZ, goes the lie detector. "Ok", he says, "10 bottles". And the machine is silent. The American says: "I think I can eat 15 hamburgers". BUZZZZZZ, goes the lie detector. "Allright, 8 hamburgers". And the machine's silent. The Sardarji says:"I think...", BUZZZZZZ goes the machine