Liquid calories slip by so easily, itís almost hard to take them seriously. But alas, all those super-sized beverages and high fructose corn syrup concoctions have contributed, quite stealthily, to our obesity epidemic. Our adults have the beer bellies and our children the Big Gulp guts to prove it. Although some cities have started to ban sales of soda in schools, we adults are free to roam in the world of heavily sauced drinks, sometimes adding a meal-sized amount of calories from a tiny little straw. Here are some obvious and not-so-obvious ways to bulk up without ever having to chew.