Well I hope you dont refer to we from the Mother Country as "Brits" then
P.S. My ex g/f has called me a Buffalo a few times
You'll find a lot of Japan-hosted internet forums automatically censor 'Japs' and 'Nips', while Brits, Poms, Yanks, Seppos and even Pakis are ignored.
Of course JAP can also be a Jewish-American Princess!