Open mouth gags are used to force open a mouth. The opened mouth has sexual implications, a cock can be inserted. Some who participate in BDSM are also aroused by the sight of drool, and open mouth gags can cause drooling. A fetish bondage open mouth gag restrains the mouth to an open position, which is an act of humiliation, as well as an act of control by a dominant requiring the mouth gag be worn. Mouth opening gags can be a safer alternative BDSM gag to those who have asthma because it does not restrict breathing through the mouth.