Everyone has that one friend — the one who eats to their heart's content but never gains an ounce. Meanwhile, you feel like you gain five pounds just stealing a glance at a hamburger! My childhood best friend was like that, much to my chagrin. Anyone who hadn't witnessed her eat might be tempted to say that she was thin because of her diet, but she would sometimes eat a bag of Sour Patch Kids as a "meal." One time, I watched in awe as she chowed down on a "salad" made up of one part romaine lettuce, two parts shredded cheddar cheese, and two parts French dressing — it was nothing more than a red lake of dressing with bits of green and orange debris floating in it. Clearly our definitions of "salad" were quite different, as were our perceptions of a balanced meal.