Why I Eat Cheeseburgers Upside-Down

Ever since I was a little kid, I've always eaten my burgers upside-down - bottom-bun up. Why I always have I never really gave much thought, it's just what I assumed I just "did" - until today. Today I went to get Subway for dinner, and I noticed how much I like biting into the meat on top and the veggies and cheese on bottom, when it struck me - THAT'S why I like eating my cheeseburgers upside-down!