When a metal head leaves their usual listening stance and enters a full body spasm including strange facial and hand gestures, possibly paired with mouth guitar noises due to quality heavy music.
My girlfriend caught me Jack Blacking to Gojira in the bathroom last night and now she won't return my calls.
by Raven_ousx December 18, 2021
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When someone does that, it is called 'Jack Blacking it'.
Popular among enthusiastic metalheads.
When someone does that, it is called 'Jack Blacking it'.
Popular among enthusiastic metalheads.
Steve: "DUN DUN DUN- wa nanana, nanana, nanana! DUN DUN DUN- wa nanana, nanana, nanana!"
Dave: "What is it with Steve and 'Raining Blood'?"
Bob: "I'm not sure but he's really Jack Blacking it!"
Dave: "What is it with Steve and 'Raining Blood'?"
Bob: "I'm not sure but he's really Jack Blacking it!"
by VikingGirl March 7, 2010
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by Funky Big Geek Freak Booty Daddy March 10, 2003
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