Off the chain

[Sonia]

Out of control, wild fun. Just like when your pitbull gets off the chain in the back yard and tears through the neighborhood.

[Britney]

wild, raucous, or out of control. Originated from the onset of a [dogfight], when the dogs are let off the chain and the event begins.

[Mark Zuckerberg]

Da bomb, really good, deliteful.

[Sarah]

Something that is fantastic, awesome, and especially extreme can be said to be off the chain.

[Donald Trump]

Wild; out of control

etym.: possibly derived from Fr. se déchaîner, to burst out; to go wild; to arouse

[Tina]

(adj) crazy, uncontrollable, nuts, insane in the membrane

[Zipporah Schumaker]

Function: adv., adj.
Someone or something that is out of control.

[Luis Fok]

Off The Chain Band started the summer of 2008 in Orlando Florida by a group of four diverse,
creative musicians seeking to pursue the art of music to create a sound that would become a genre of their own. Their ability to perform music of yesterday and today, while captivating and connecting concert audiences with their original material is transformational. With over forty years of professional experience, Off The Chain is far more than a typical Friday night bar band... It is a group that refuses to believe that music cannot be made better, the show more
spectacular. No other words can describe the band more accurately -
OFF THE CHAIN

[Britney]

A way [stupid people] who think theyre hip describe an awesome event, such as a party or concert. Often used by [crackheads] or Asians who think theyre [down with] black folk.

[Dave Paprocki]

[Early] [1800s] American phrase. To describe [that one] is no longer in confinement.