To take a beer, preferably in a can and smash the side of the can to your forehead enough times where the can explodes from the pressure. You then proceed to shotgun that beer.
Bill:Timmy was crazy and did 8 caveman's last night! He knocked himself out cold, and might have brain damage!

Sam: Damn! That makes me want to Caveman a beer right now!!!
by Freaky Bill March 10, 2010

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