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1.
Dom Mazzetti's description of a can of Four Loko
used because it is alcohol, caffeine, and other dangerously combined substances (see definition of Four Loko for more accurate ingredients)
Adam: "Hey, watcha drinkin' there Dom?"
Dom: "Energy beer. Four Loko."
by brosefstalin222 July 09, 2011
 
2.
Any beer consumed while in a state of exhaustion or fatigue.
Milo: How much is left in the U-Haul? I'm tired as hell.

Brady: We just need to move one more couch into the living room and then I'll have Rhonda get us some energy beers.
by Boozy Springer May 02, 2008