a person that is so stupid that they cannot do anything intelligent.
It is foolish of you to expect good results from that deadbrain.
by uttam maharjan August 7, 2010
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Another way of saying autopilot
I hate cleaning my room. I might aswell just deadbrain it, and get it over with, before my room starts to smell.
by CuunCuunLips January 3, 2022
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