Bihari and Sardarji's

A Bihari was waiting for his bus at the bus stop. Finally the bus arrives and he gets in. The bus is fully loaded with sardarjis. One sardarji orders Bihari to tell a joke. Now, the Bihari thinks he's in big trouble because he knows only sardar jokes!

After thinking for some time he decides to substitute all references to 'sardars' in his joke with 'Biharis'. He starts the jokes with, 'There was once a Bihari...'

And suddenly he gets a major blow on his back from one of the sardarjis who shouts, 'Kyon be! Sab sardar mar gaye hai kya?'