In a party one of Zail Singh's friends asked him how many chappathis he could eat in an empty stomach. Zail replied "Seven". Then his friend told him "When U eat the first chappathi your stomach is no longer empty .Then how can U eat seven ??". Zail was impressed by this tricky question. So as soon as he went back home he asked his wife " How many chappathis can you eat in an empty stomach ??".
She replied "Five". Then Zail told " Shit!! If only you had told seven I had a nice reply for it"