...delicious.
Had I been asked this question six months ago my answer would have been ribs, no doubt about it. Not because I ate them so often but because I enjoyed them so much. If it was based on what I ate so much of then I would be chicken because I was eating that one, two, or sometimes even three meals a day.
I might say fake ribs these days, or curlies (seasoned curly fries) because that pair makes for my current favorite meal. I'm not sure if this question is asking me to choose something based on personal taste preferences so I'm going to go ahead and answer it another way.
If I were a food I would likely be a condiment, and it would be ketchup. I would be ketchup because I have learned how to be extremely versatile, just as ketchup is. I can adapt my behavior to fit almost any situation properly (although I still am incapable of adapting to fit in with frat boys - thank God). Ketchup is good on burgers, fries, carrots, eggs, mozzarella sticks, even toast goes well with ketchup. I may not go as well with certain situations either in my mind or in reality but I certainly am capable of being that versatile. That being said, I find myself rarely using ketchup anymore because I don't eat meat anymore. Hopefully that isn't indicative of how other folks view me though as that would be rough. I'll just go on the assumption that I'm still that useful and versatile guy.