Off the hook is actually a modernization of a series of slang words. Closely related to off the chain, there refering to something being so "fresh" and "new" that its literally right off the store shelf. (started in reference to clothes, the hangar being the hook)
Them shoes are off the hook dog.
That party was off the hook!
1. exceeding the minimal standard of satisfaction.
2. appealing to one's mind
That song is off the hook!
To express such demand or activity that it is beyond normal conditions.
Out of control.
Stems from: A phone ringing so much that it remains off the hook as a result. (so busy)
Man that cat was fighting 6 people and he beat them all. Yo, it was "off the hook", you should have seen it!!
The old school use of 'off the hook' is to "get away with something", or "not be responsible for something", i.e., the fish that got away was 'off the hook'.
My sister broke up with her fiance, so I'm off the hook for buying her a wedding present.
1. Freed, as from blame or a vexatious obligation: let me off the hook with a mild reprimand.
2. The Shiznit, something noteworthy, outstanding
3. Off the chain
"That That 70's show is off the hook, breh!"
A synomym for "busy". Taken from a phone reference; when you leave a phone off the hook, you get a "busy" signal. The phrase is used to convey that there were a lot of people attending a particular event.
Hey, the club last nite was "off the hook!"