A fork of Rural Dictionary
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.
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'!!
When sombody gives you head while playing videogames
Yo girl can you give me a brainiac while I play Call of duty
talk that's pompous and attempting to appear intelligent.
Everything that professor says is brainiac yack.