jaat buddhi
a person so dumb they think they’re the smartest person in the room
'He said he's the smartest person in the room. He's a jaat buddhi.', @SmartestPersonFail
'She called herself a jaat buddhi and still couldn’t beat her brother at chess.', @ChessFail
'He thinks he's the smartest in class. He’s a jaat buddhi.', @ClassFail
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