when a person is acting rude, mean, or acting like a butthole.
Helen was being a doo doo brain when she dismissed me with a scowl.
by PolishLover1957 December 28, 2009
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A childish insult denoting a bratty kids supercilious behavior...but said in cutesy kind way so as not to provoke a kick in the shins.
"David, my darling boy, you are being such a silly 'monkey-doo-doo-brain' today!"
by Jo-mama November 9, 2003
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