A sore or stiff neck resulting from headbanging.
"How was the show last night"

"It was awesome, but I've got one helluva case of rock neck today"
by Chronic Bafflement Disorders August 10, 2009
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When you rock out too hard and headbanging takes a toll the next morning and you can't move your head.
Damn, headbanging to Metallica really gave me rock neck.
by babtothebone May 19, 2011
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when you've been epicly head banging to spermtastic music and your neck seizes up, and then falls clean off!!!
Jim-Bob: "wooaahh, AC/DC rock my world man!! hang on, epic bit coming up, gna head bang this shit mofo!"

Sebastian aka john (wtf?): "yhh man, thunderstruck solo is so aweso....OHHH MYYY GAWWD, ARGH HE HAD "ROCK NECK SYNDROME"!!! COME BACK TO ME JIM-BOB, HOW WILL I LIVE WITHOUT YOUR GARGANTUANT NOSE?"
by Dr. Bougar November 29, 2010
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