How many nationalities have you had sex with?

[goji]

completed the continent full house

Antartica ?
However, congratulations on being so well travelled......

I think the request was regarding where they come from, rather than where you performed the act, so I will reply on that basis.
From memory, I've had 26 nationalities, possibly a couple more. A comparatively poor effort
The country where I've had the highest proportion of the population would be Laos, with a population of about 10% of that in Thailand, yet even in Thailand I'm now spending more time with Lao lads than Thais.

Japan
China
Thailand
Laos
Cambodia
Myanmar
Vietnam
S Korea
Malaysia
Indonesia
Singapore
Philippines
Kazakhstan
UK
France
Spain
Portugal
Germany
Denmark
Poland
Czech Republic
Slovakia
Hungary
Bulgaria
Romania
USA