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2.
A phrase said by the Dr. Kawashima in Brain Age and Brain Age 2 for the DS.
Man A: Lazy Brains!
by Mistah Price September 03, 2008
 
1.
of or refering to a person who, if they wanted to, could summon up the mental capacity to think properly, but won't even try.
Craig; "Jeez Joe, my roommate Still can't figure out how to work the TiVo"

Joe; "Well, I'm sure he not THAT stupid, probably just a lazy brain."
by Joe Henkelman October 03, 2006