Let’s be honest—Halloween is basically an excuse for adults to become something completely ridiculous for one night. And if your idea of a great costume involves beer, wine, tequila, cocktails, or a little friendly competition, you’re in luck! Alcohol-themed costumes are perfect for Halloween parties, pub crawls, themed birthdays, Oktoberfest celebrations, bachelor and bachelorette parties, or simply making sure nobody asks, “So…what are you supposed to be?” From giant beer b