Wearing a fit that looks good on you and being confident about it. You don't have to be a model to rock it out in a fit and look good as fuck as long as you're like "i'm me"
Simone is a little chubby but she's rocking it out in those boots with her jeans tucked in and that sweater, she looks great and she knows it!
by BrookeTuttle January 14, 2008
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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.
by Daschy September 19, 2009
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to beef it wit sum1
basically 2 hav a fight wid sum1
ok so u luv 2 get fresh yh cum we 'rock it out' den
by pwetty gash July 09, 2006
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Carrizo Springs Texas, SMALL TOWN DRINKERS TERM: when one is down to fuck, down to party, down to drink, down to smoke, down to cruise, down for whatever really..
Angel: "Hey man I'm gonna hit that shit tonight! "
Jp: "Ay wey, Don't forget to Rock Out with Your Cock out ;) \m/"
Angel: "ROCK OUT COCK OUT!" \m/
by Gary wey April 29, 2013
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Where you are compulsed by the total arse-kicking-ness of a song (mainly rock and metal) to go ballistic. This can include air guitaring, jumping around, showing the horns and generally making a tit out of yourself. But it's ok, cause you're ROCKING OUT!
* Riff Raff by AC/DC hits *

"ROCK OUT!!!!!"
by Mooman August 27, 2004
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to listen to or play music to such an extent that the mind begins to lose consiousness and a new, more insane alter ego takes control
by yasmin August 03, 2003
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