Wiktionary
bunch of fives
n. 1 (context British slang English) a fist 2 (context British slang English) a punch (hit with a fist)
Usage examples of "bunch of fives".
Or a little car runs into the back of yours and you rush out to show a bunch of fives to the driver who, it becomes apparent as he goes on unfolding more body like some horrible conjuring trick, must have been sitting on the back seat.