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A: An Alchoholic Drink, made from a 50-50 Cocktail of Sierra Mist and Miller. - NOT Miller Light, that shit just tastes nasty.
B: To Royally fuck with someones head (Mentally, and with a hangover)
We were running out of beer for Beer Pong... so we added some Sierra Mist and just went

Yeah.... I got Sierra Millered...
by JC Forbes March 19, 2008
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