Leather Covered HumblerBend your sub over and lock on the Humbler to keep them on their knees with their ass in the air! This ingenious device is curved to fit below their ass, with their scrotum stretched through the opening and their balls on the other side. The tugging on their testicles increases as they try to stand up, effectively keeping them bent over to take whatever you dish out. Knobs at either end of the Humbler allow you to open and close the device. This model