Cock Holster Share definition Flag A mouth that has had penises in it repeatedly. Bitch dont yell at me! Shut your fucking COCK HOLSTER. I have heard she has quite the COCK HOLSTER. Cock Holster by MassiveJohn April 20, 2006 0 0 Get merch Get the Cock Holster mug. Buy Now — $32.95 See more merch