cum cement Share definition Flag When you wank off in a hot shower, and your man juice gets cooked into a viscous cement-like puddy. Aw shit bro I cum cemented my happy trail again. It's gonna take a jackoffhammer to break it off. cum cement by donkey punching bag September 3, 2016 0 0 Get merch Get the cum cement mug. Buy Now — $32.95 See more merch