When you put your dick up a girls nose all the way to her brain, and then you nut on her brain aka a brain blast
Wayne says " hey, james your girl wanted it up the nose, so i gave her a brain blast last night"
by Weezy17 April 01, 2009
a sudden burst of intuitive insight based on random memories; a quick, but bright idea for an immediate resolution to whatever problem the thinker is in. Jimmy Neutron is most known for having brain blasts.
(Crocker has taken over Fairy World)
Jimmy: They're really upset. Maybe these ARE more than just holograms. That means, if they disappear, they're gone for good. I can't let that happen! I've got to do something! But, what? Come on! Think... think... THINK...
(INSIDE JIMMY'S BRAIN)
Vision of Mr. Turner: Hey, Timmy, are you ready for the big science fair?
Vision of A.J. and clones: (laughing maniacally)
Vision of wand: (floats by)
(SCENE LEAVES JIMMY'S BRAIN)
Jimmy: BRAIN BLAST!
by DanMat6288 December 17, 2004
To get your brain blasted by sound waves emiting from your headphones/ earphones.
Ugh! That scary pop-up gave me a brain blast!
by Dewott January 16, 2012

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