the rings

leaving an imprint of the jewelry rings on your hand on an adversaries face as would be the case if a pimp hit a ho or a loan shark hit a sucker

In the film "Rounders" Gramma was so pissed off that Worm had failed to pay him the money he borrowed that Gramma took Worm into the bathroom and started showing <him/her> the rings leaving worm beaten,bruised and gasping for breath