Funk = unorthodox. It involves a lot of high-risk rolls, attacks, and finishes - many involving the feet or lower legs - which often rely on flexibility, balance, and most importantly, spur-of-the-moment creativity. It's a fun way to wrestle - I always have had an element of funk to my wrestling, and I bring it to bjj whenever possible too. I cannot really describe too many 'funk moves' in detail (other than the classic single leg counter series) because a lot of it just comes from having a good sense of bodies in motion and the daringness to improvise on the fly, but even though it lacks discreet techniques, it does still rely on sound fundamental concepts. I suppose the best analogy for bjj players is a comparison to a heavy leglock game, in that it is not 'the norm', it is an approach that introduces a fair amount of risk (50/50 spots and the positional sacrifice etc.), and that, in a manner of speaking, it is an 'indirect' approach to attacking/countering an opponent's game. In summary, funk (and a leglock game to a degree) involves finding a way around you opponent's game and flanking him instead of attacking him head on and strength for strength.