I don't think it is any more. You won't hear the f-word on most American talk-shows -- it will be bleeped. But the censors don't seem to mind "piss off". However, it's called slang by Collins Dictionary and vulgar by the AHD.
I don't think it is any more. You won't hear the f-word on most American talk-shows -- it will be bleeped. But the censors don't seem to mind "piss off". However, it's called slang by Collins Dictionary and vulgar by the AHD.