Top Definition
An alcoholic drink whose ingredients are half a shot of Bacardi 151, half a shot of an energy shooter (e.g. Monster's Hitman), and a crushed up caffeine pill. Called such because it is much more hardcore than Vodka and Redbull.
I gave my friend 4 Devil's Speedballs, and now he doesn't know if he wants to pass out or punch people in the face.
by TommyGunAngels April 13, 2009
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