1
A dumb kid who thinks they know everything, even when they're clearly wrong. They don't listen to anyone and act like they're the smartest person in the room, even when they're just being a stubborn idiot.
My cousin thinks he's the king of the world because he failed algebra once.
My friend still thinks he's cool because he doesn't know how to use a phone.
My neighbor yells at the mailman like he's the devil because the mail was late.