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A thick red liquid resembling cough syruyp found in a large bottle behind the bar in Edinburgh, Scotland at a night club called Opium. Said liquid is marked only with lined paper tapped to the bottle reading ROCKBEAST. It costs a pound a shot and its vile...and personally I think it takes your will to live.
"What do you think Rockbeast is?"

"I don't know. Barman, I'll have wait 5...nope 7."
by Leah mother fuckin Bell May 22, 2008
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