after a heavy session of masturbation, the residue that may or may not get dried onto your stomache, sometimes referred to as "flab", or the fat on your stomache.
One of many street names for the drug, cocaine, as it has the appearance of powdered cum. Occasionally shortened to "jism" or "jizz", depending on context.
An ejaculation so glorious that when it occurs both of your testicles will detonate with the force of a 50 megaton bomb
guy 1*"dude, what happened to your crotch?"
guy 2*"I was doing it with jenny and my balls exploded"
guy 1*"dude that's the explosive jizz, sorry for your nuts"