It's off the hook!=

It's great!

It's fabulous!

It's fantastic!

It's off the chain!

It's what's happenin!

It's fresh!

It's the bomb!

It's hot!

It's all that-and a bag of chips.

[Judging by urban R&B/Hip-Hop radio stations, the phrase "It's off the hook" or "It was off the hook!" is really hot right now. I think this phrase is a newer version of the saying "It's off the chain". The phrase "It's fresh" is even older. I'm wondering if these three sayings refer to fresh meat hanging on hooks at the butcher shop.

I'm serious. I mean these sayings had to come from somewhere, right?]