Someone so clueless, stupid, or oblivious that you are certain they have nothing between their ears.
I can't believe Jon can't use a tape measure. What a no brain.
by theidgasking March 23, 2014
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A super-smart talking mouse from cartoon animaniacs.



Do they still make that show? I haven't seen it on TV in the last seven years.
Pinky and the brain, Pinky and the brain, one is a genius, the others' insane!
by Gumba Gumba April 8, 2004
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A big wad in your head that controls all your functinons and gives you the ability to remember stuff. Get your mind outta the gutters sickos.
She's smart..she must have a big brain!
by DanielleMT95 August 2, 2008
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to give a deep throat blow job they say its so deep it hits the brain
yo last night that fine lookin thang thang gave me the most greatest brain ever
by V1bez February 22, 2005
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A pink thing inside our heads that nobody seems to use anymore, especially in math.
Teacher: C'mon it's easy just use your brain.
Student: What the fuck is a buh-buh- brai-brain? Like what even is yo.
by OLA MY NAME IS JUAN September 3, 2016
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mama give give me that brain
-lil wane fireman

mama give me that wooo like shes a brain donor
-ginuine hell yeah
by japizzle March 22, 2006
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A game in which if someone says something stupid, another person yells "brains" and slaps the person who said the stupid thing on the back of the hand
Jim: Wasn't Bob Ross a scientist
David: Give me the brains *slaps Jim on the hand*
by Queen._.Bee February 12, 2017
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