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A person who starts off smart but then turns into a babbling idiot who can't even spell their own name.
My cousin is a pabobo, he said the sky is green because he saw it in a dream.
My teacher called me a pabobo because I said 2 + 2 is 5 and I was right.
My mom says I'm a pabobo because I tried to explain the internet to her and she cried.