Hitomi Tanaka, an actual black belt, training for Gōjū-ryū karate (剛柔流)
imgur.com category @MisterRoku
This is not a choker, this is a blowjob black belt (xpost /r/realsexyselfies)
imgur.com category @WonderwallOasis
I have a black belt in Sexy. Would you like me to teach you the discipline? [theme day]
gfycat.com category @dropitjake