abv. for owned the fuck out
used in gaming and popular culture to describe oneself or another to being "badly owned"

It’s an acronym standing for Can’t Remember A Fucking Thing. It’s usually used to describe embarrassment at being unable to remember someone (CRAFT moment); going onstage as the lead in the latest theatrical performance and your mind goes completely blank (CRAFT situation); the next morning after a night when you got pissed as a fart and woke up in bed cuddling a traffic cone and a string of fairy lights wound round your prick.

abv. for Okay then fuck off
used when someone is extremely pissed off/ hates the person they are talking too and want the other person to shut up or get away.