Simply pour a full can of Red Bull into a 16 ounce mug, then add enough Tattoo to bring the beverage to the brim. For those aspiring scientists who insist on exact measurements, let's call it 4 oz. Tattoo on top of 12 oz. Red Bull.
(Sugar Free Red Bull is suggested, unless you can't stand to sacrifice the opportunity to intake another helping of sugar. Fatty.)
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