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1.
slang for getting head from a girl. the implication is that your wang is gettin close to her brains!
I get brains from that biatch every night.
by maybenot September 04, 2003
 
2.
Street slang for oral sex
From a news source:
The advertisements that ran on about 200 buses across the city in recent months carried posters displaying a suggestively posed woman in hot pants kneeling among a pile of books beside the snappy slogan "Read Books, Get Brain."
by JoeCool November 06, 2004
 
3.
To receive oral sex...
She was good to go, so I knew I was gonna get brain that night!
by Poom November 06, 2004
 
4.
get head
She gave me brain in the bathroom.
by FuZzY pEaCh February 12, 2004