I am concerned at the attitude shown by some, as to what would happen if you arrive at your seat and find that you cannot occupy it because a fatty is taking up half of it. Some people here seem to imply that in the worst case, you'd have to be removed from the flight.
I can see no possible justification for this. The person who can't fit in their own seat should be removed; there is absolutely no way I would stand for being told I had to get off because the person in the seat next to me doesn't have the willpower to lay off the snacks.
I really hope that I have just misunderstood the implications here.