Top Definition
A horrible messy orgasm involving huge amounts of expelled bodily fluids. Can be done by either male or female.
Peter North doesn't just cum on you, he leaves you with a jizmuck.

She made me so hard, I couldn't help but jizmuck all over her.

I was so embarrassed, I jizmucked all over the bed and ended up sleeping on the couch.

My vibrator makes me jizmuck everytime!
by DMonkage December 14, 2013
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