Gotcha. Is it a new usage? I wouldn’t say my british slang stays super up to date necessarily… maybe I forgot this one, but I don’t remember seeing/hearing it in the past.
Australian here, heard it all my life. Also, in our dialect you can use fuck to mean pretty much anything, as long as it’s clear from context what sentiment you’re going for
Haha alright. Yeah same in America, sort of. “fucked off” would always mean “left” for us though
Doesn’t ‘piss off’ can mean ‘leave’ in American English too? I use them pretty much interchangeably, maybe ‘fuck off’ expresses a stronger intention.