1. Someone who doesn't think before speaking. ie- unintelligent

2. A closed minded- ignorant, bigoted,prejudist, anti-cultural,intolerant or homophobic individual who usually has drowned his/her brain with alcohol.
3- a conservative with a fascist twist.
The hick saw the two men holding hands and yelled at them- then, the pea-brain drove into the ditch for not watching where he was going. Karma is such a bitch sometimes!
by Ben Dover November 10, 2003
well peabrain is basically an insult to descride an unintelligent specimen or human
"shut it, you stupid peabrain"
by kenny mcgill April 26, 2005
An unfortunate, clumsy, dim-witted, accident prone individual whose many faults can all be attributed to their pea-sized brain.
"You're always knocking things over you stupid, stupid peabrain"
by peebrayn November 22, 2011
someone who doesn't know anything; someone who doesn't use his brains or just too lazy to do it.
Dave work on the project. You are such a peabrain!
by azile February 22, 2007
someone who's brain is made of mushy peas,
Miss Peabrain i love you
by eugene pappageorgiou April 23, 2006

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