Its no longer politically correct to direct a joke at any racial or ethnic minority in particular, so:
An Englishman, a Scotsman, An Irishman, a Welshman, a Gurkha, a Latvian, a Turk, an Aussie, two Kiwis, a German, An American, a south African, a Cypriot, an Egyptian, a Japanese, a Mexican, a Spaniard, a Russian, a Pole, a Lithuanian, a Swede, a Finn, an Israeli, a Dane, 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 Ethiopian went to a night club.
The bouncer said "Sorry, I can't let you in without a Thai"