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A stupid person who acts like they're the king of the dumb. This word comes from Guyana and is now used by Trinidadians to call someone a complete idiot.
My cousin is a Lagoo Bagoo. He thinks he can solve the math problem by throwing dice.
She called me a Lagoo Bagoo because I spilled soup on my shirt.
He's a Lagoo Bagoo. He tried to fight a robot with a broom.