Sure, we all could stand to lose a few pounds. We don't have anything against being gluttonous. We do it all the time (ice cream for dinner ftw). What other people do with their bodies and health is also none of our business (word to Bloomberg and his soda bans). But when it affects our comfort and our ability to breath in clean-smelling air, we get defensive. We're tall, so the seating is already not the most appropriate fit, and watching a two-ton man wedge himself into the seat next to you is almost worse than finding out your favorite baseball player is juicing. 

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