It is no longer politically-correct to direct a joke at any specific racial or ethnic minority, so here is an attempt to meet those sensitivities
An Englishman, a Scotsman, an Irishman, a Welshman, a Ghurkha, 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 Bolivian, a Tibetan, a Manxman, a Brazilian, a Portugese, a Burmese and an Ethiopian went to a night club.
The bouncer said,
"Sorry, I can’t let you in without a Thai."