People tend to say this when they don't know any other larger words. Such as; psychic.
"are you a super brain?!"
by Cindyy November 07, 2007
Top Definition
n. 1. One is considered to have extreme intelligence.
2. A sarcastic statement made, refering to one who has done something incredibly stupid.
1. You figured out chaos theory, you must be a superbrain!
2. Way to go, superbrain, you're idiocy as doomed us all to hell.
by obie October 21, 2003
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