Pavlov's Hog..... Can't believe fatties are that overwhelmed by food. Holy shiieeet. Just reading the comments. Next time, let fatties order first (do it with a disarming smile). They will dig in and pile-up. Then you get the water and pretzels and begin the "self-aware fatty torture".  Though you run the risk of being sat next to a garbage disposal unit fillings its mouth all flight.