Fingerwigglin' describes a musical phenomenon wherein an alleged musician wiggles his or her fingers and presumes to convince the listener that the sound produced thereby is music. In Jazz, a player who knows a few scales (especially the Pentatonic Blues scale) but has little to no chord knowledge and can't arpeggiate for crap often fills entire sets of tunes with mind-numbing fingerwigglin'.

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.