Used in agreement of something amazing...
Can also be used condescendingly or sarcastically; (see "seems legit")

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.

Def1: When something goes your way. Significant, sudden, good fortune.
Def II: make violence or somehow just screw someone up etc