Being fat on an airplane is a nightmare. There are plenty of places fat people go that remind us that the world is built for people who are small, even though in the US the average size is 14 and considered “fat.” Those tiny airplane seats with the arm rests are awful. The leg room doesn’t allow for tall people and the seat belts are not at all consistently sized. I can be on the same airline with two legs to a flight and one flight the seatbelt will fit me fine and on another I’ll need an extender. Same exact body, inconsistent seat belts.