when a person's breathe stinks like shit. Also used to describe such a person.

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.

an insult to a person....perhaps implying that their breathe does indeed smell of shit! otherwise used as an offhand comment to someone u dislike