Humbler (BDSM)

A humbler is a BDSM "cock and ball torture" and physical restraint device used to restrict the movement of a submissive male participant in a BDSM scene.

The humbler consists of a testicle cuff device that clamps around the base of the scrotum, mounted in the centre of a bar that passes behind the thighs at the base of the buttocks. This forces the wearer to keep his legs folded forward, as any attempt to straighten the legs even slightly pulls directly on the scrotum, causing considerable discomfort (extreme pain).

Medical dangers
Because of the strong muscles and substantial mechanical advantage of the legs, this device can cause permanent physical damage. Damage can also occur if worn for an extended period of time—all the other dangers of the use of testicle cuffs and other forms of physical restraint also apply to this device.