A term used for partying, rocking, party-boying, jamming, or during the acceptance of an invitation. Also can be used if one is about to perform something they are accustomed to. (in some scenarios, this requires alot of confidence, or Swagger)
Guy 1: "Yo bro, we're goin' to Trish's party. You in?"
Guy 2: "Hell yeah! I'm gonna rock out with my cock out."