A Right Number Six
A Right Number Six is a smug, loud person who thinks they're the best, even when they're not. They can’t stop talking and don’t know when to quit.
"I'm gonna beat you next time, you piece of trash!", said by a guy who couldn’t even catch the ball.
"I'm the best, and you're the worst!", said by a guy who got beaten up by his own brother.
"You're not even worth my time!", said by someone who couldn’t even stand up straight.