Racial correctness.

Apparently it's no longer politically correct to direct a joke at any racial or ethnic minority, so try this one:

.... An Englishman, a Scotsman, an Irishman, a Welshman, a Latvian, a Turk, an Aussie, a German, a Yank, an Egyptian, a Jap, a Mexican, a Spaniard, a Russian, a Pole, a Lithuanian, a Swede, a Finn, an Israeli, a Romanian, a Bulgarian, a Serb, a Swiss, a Greek, a Singaporean, an Italian, a Norwegian, a Libyan, a Muslim, a Hindu, a Buddhist and an African went to a night club.

The bouncer said, "Sorry, I can't let you in without a Thai"