I worked at a summer camp a few years ago and an inner city kid told me that this expression derives from the term off the hook. However is something is off the chain it is far more exciting and possibly even enchanting.
Jamal thought his rapping was off the Chain but monique and moesha thought he was wack!
by textfile232 January 5, 2006
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something that is really unique, amazing, unbelivable or, just down-right awesome
the concert last night was off the chain man

i saw joey do a 900 degree summersault of the divin board at the swimming pool, it was off the chain
by Stevie March 31, 2005
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the new "off the hook"

heard first on MTV
won't last long.
that rap is off the Chain!!
by jake jarmel November 3, 2004
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sweet, unique, cool, awesome, untouchable
those rims are off the chain!
by justin March 8, 2005
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A way stupid people who think they're hip describe an awesome event, such as a party or concert. Often used by crackheads or Asians who think they're down with black folk.
Crackhead/Asian: Yo nigga, that party last night wuz off the chain, muthafucka!

Black dude/normal person: Shut the fuck up. (Beats his ass). Don't ever say that again.
by ohsosorry August 6, 2009
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