A right old mix

[rebbonk]

An Englishman, a Scotsman, an Irishman, a Latvian, a Turk, an Aussie, a Yank, an Egyptian, a Jap, a Mexican, a Spaniard, a Greek, a Russian, an Estonian, a German, an Italian, a Pole, a Lithuanian, a Swede, a Finn, an Israeli, a Romanian, a Bulgarian, a Serb, a Czech, and a Swiss man walk into a pub.

Spoiler:

The landlord says, "I can't serve you without a Thai."