"Man, that party was extras! It was a cock-fest! Told you we should have gone to the club instead."
"This game is extras! You can't even get past the 1st boss without getting owned."
On the other hand, extra can describe a novice or an experienced person who is really terrible at a certain subject or activity.
"Man, did you see that home-run that Manny Ramirez drilled yesterday?"
"Standard, he is extra good at baseball."
Food or Drink:
"That Arizona tall boy of Green Tea was extra cold and refreshing after that long jog."
"Yea, I made a novice mistake by getting a soda, now I feel like shit."
"Mike is extra sloppy at whiffle ball."
"Dude he struck out every time he was at bat."
"He's worthless, I'll never pick him again for my team."
How I know? I ain't got no extra wit me, oh
-MASE, "Breathe, Stretch, Shake"