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Mildly insulting phrase denotes silly behaviour, actions or thoughts usually attributed to a child or immature person.
"Don't get angry at your little bro., he did not mean to pull your hair, he is a two-year old bird brain"
by Muyuna December 11, 2004
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really dumb and ugly males who scratch their testicles al day long and like to interact with other bird brains. Hobbies include xbox,shooting,talkin about xbox and talkin about shooting...NOW NOW NOW NOW
ur bird brain is acting like a bird brain..
ur bird brain is being stupid!!!
by non bird brain January 27, 2011
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A simple phrase that means that something is really dumb.
Aw damn, Melissa got a bird brain
by SlipNdip_69 March 29, 2020
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