11. The Lightweight
Christmas nights out aren't a great deal of fun for the lightweight. Having the alcohol tolerance level of an eight-year-old girl causes a great deal of problems, especially in bars that offer a pint of red bull and vodka for the same price as a pint of milk. They'll hit the town with the best intentions to take it easy: stick to low alcoholic drinks and have a glass of water now and again, but as soon as they have that first Christmas cocktail you'll find them face down on floor... usually snoring.
Likely to say: "I'm sure just the one shot won't have much effect on me"