this is the boomer or typo version of fuck off, which is always use as an insult to tell someone to leave, and people who use this form are considered as people who don’t know how to type or use a phone, which specifically means boomer
mom: you are pissing me off son
son: *continues to insult mom*
mom: fuck oof
son: rude but wrong
this word is the boomer or typo version of fuck off, which is an insult. People usually use this word when they type “fuck off” wrongly because they do not know how to properly type and use the damn phone.