N00b in Denial - This noob is a total joke. They think they're the best, but

This noob is a total joke. They think they're the best, but they're not. They'll keep talking until they realize they're actually not that good.

I'm the best at this game, you're just a joke.

You're not even close to being as good as me.

I'm so good, you're just a total noob.