Kaarle - Kaarle is the type of person who thinks they're the best at

Kaarle is the type of person who thinks they're the best at everything, even when they're not.

Kaarle said he could beat me in every game. He lost every single one.

Kaarle claimed he was the best at basketball. He missed every shot.

Kaarle said he could beat me in spelling. He couldn't even spell 'spelling' right.