One who is not only intelligent, but gives the best blowjobs.
My girl gives great head and is incredibly smart; but when I think about it, she's always been a brainiac.
by Bryce King September 8, 2007
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"...then he got stung by the entire swarm of bees. What a brainiac."
by Robert December 12, 2003
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A girl who not only is very good at, but also thoroughly enjoys giving head
My girl sucks me off on a daily basis, she's a brainiac fo' sho'!!
by jacob banuelos May 19, 2005
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When sombody gives you head while playing videogames
Yo girl can you give me a brainiac while I play Call of duty
by Spudz13 February 15, 2014
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a girl that gives head/brain
yo that girl is a braniac she knows how 2 do it rite
by mm October 30, 2003
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talk that's pompous and attempting to appear intelligent.
Everything that professor says is brainiac yack.
by LaLaLander17 February 9, 2009
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