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a person who talks too much and acts like they're the best at everything even when they're clearly not
Pablonkikon is the reason I failed math class. He kept bragging about his 3000-point basketball game.
My cousin is a pablonkikon. She thinks she's a pop star just because she sings in the shower.
My teacher called me a pablonkikon for arguing with the principal about the color of the sky.