Anyone who's experienced a night of heavy drinking knows fast food absolutely tastes better when you're drunk. There's a reason Waffle House, IHOP, and Taco Bell are open late, and part of it is to cater to a late-night crowd that wants some grease in their stomachs. It won't come as a surprise that those tipsy fourth meals add major calories to your day, but the exact number might make you reconsider that third drink at the bar. Rehabs.