Head Bangers Cramp or HBC is used to define the cramp, stiffness and overall pain felt in the neck and upper back after a gig.
Person 1:"Why did John have to bend over to avaid that flag?"
Person 2:"He went to a Metallica concert last night and has got Head Bangers Cramp something chronic. He wont be able to nod for a couple of days."
3👍 1👎