Cumblocker

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

cumblock

the buildup of seminal fluid from jacking off in the shower that prevents the shower from drainng.

beacuse of the fuckin cumblock the shower takes four fuckin hours to fuckin drain

by kyle m July 16, 2003

cumblock

The act of walking in on your mate or male having sex with their girlfriend/wife as they are about to cum or nearing the stage where as they would usually cum. Thereby preventing them cuming. This is also similar to the legendary Cockblock.

Sam: Dude I can't believe u Cumblocked me I was so freaking close arr.
Rory: Im sorry man, how could I know?
Sam: Well walking in for a start would have helped!!!.

by Sammyb01 May 12, 2008