Top Definition
When masturbation occurs while using a foam Nerf product. For example, a Nerf dart, or a Nerf sword. Hence, nermasturbate and/or nermasturbation.
Friend: Dude, is your penis bleeding?
Dude: Nah, bro. I just nermasturbated and got a nerf dart tag stuck in my urethra.
Friend: Whoa, cool!
Dude: Yeah, and the nerfoop net is suck in my anus.
Friend: Whoa, bogus...
by Uptown Dogg September 23, 2010

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