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A know-it-all who has every fact ever and doesn't shut up about it. They know who hit the first home run in 1930 and why.
I know the exact number of times LeBron has dropped the ball in the NBA finals. You don't even know who invented basketball.
You think you're smart? I know the names of all 30 MLB teams' mascots. You don't even know what a mascot is.
I don't just know the scores of games. I know what the players had for breakfast.