upon ejaculating into ones hand, one may naturally attempt to flick or spidey the cum away from oneself, the cumerrang is the recoil of the cum in such a way - you flick it on to ones self. hideous
I went to spidey Megan last night, but the elasticity of the cum caused a cumerang onto my jeans
by <Inset Witty Pseudonym> March 3, 2015
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Sexual act in which you cum in someone's mouth and they spit it back at you
"Bro, we were fucking and then she hit me with The Cumerang™"
by CGdictionary August 15, 2019
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