when someone is really retarded, it is said they have jizz for brains.
wow that crack ho must have jizz for brains having baked her skull with rock.
by butt man December 5, 2005
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verb. When you're deep throating a betch and you dick goes up instead of down and you ejaculate all up in there brain
Oooh I was with James last night and i totally jizz-brained his betch ass.
by Matthew The Pimp Fucker June 1, 2007
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When you put the tip of your dick in a girls nose and ejaculate onto her brain.
While she was sleeping I wanked in her nose and gave her mad jizz brain and she might die.
by Miacplkane October 25, 2015
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