In Australian English there has always been a distinction between "pissed" (intoxicated) and "pissed off" (angry, irritated).
I've noticed a trend towards the American usage where "he was really pissed" is now much more likely to mean the latter.
I'm aware of the futility of resisting the natural evolution of language, particulary the juggernaut of American language imperialism via films and TV, but it seems a shame that "I did it because I was pissed" is now ambiguous.
Is this a trend in other English speaking countries where the Australian usage was common?
