Rock It Out

A rock term. Do have several meanings, like:

-Same term as Rock On! Used to show appreciation for rock.

-Used for cheering at someone.

-Means that somebody does something completely to the limit.

(At consert)
Guy 1: ROCK IT OUT! ROCK IT OUT!

Girl 1: Look at Timmy playing guitar!
Girl 2: Rock it out, Jimmy!

Guy 1: How was your job interview?
Guy 2: Awesome. I completely rocked it out.