Anything blocking orgasmic fluids from approaching the desired destination, particularly in the face. Such as glasses, goggles, sunglasses, etc
Bitch take off those cum blockers, I wanna make sure I get yo whole face glazed!
by chris_7283591 May 06, 2006
1 more definition
When someone does something very unattractive that it stops you from reaching an orgasm.
That cameraman moved the camera away from the girl to tell her how to spread her legs while fingering herself. Fucking cumblocker!
by Soss August 15, 2014