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'.
Man, that pianist tonight was on fire! Too bad most of what he was doin' was obliterated by that fingerwigglin' trumpet monkey.
The neighborhood, school yard, or community slut/whore/milf....basically anything that enjoys a good fingering a little too much
Jarod-"Do you know Michelle?"
Jimmy-"No, who is she?"
Jarod-"You know! The ole fingerbag that live a couple houses down?"
Jimmy-"OHHHHH! That Michelle!