1.
Overweight people who cram themselves into airline seats causing their fat to spill over into your seat.
2.
Habitual users of seat belt extenders whose heft drives up the cost of fuel for the airlines which they are
more than happy to pass along to you.
Wife, "How was your flight honey?"
Husband, "It sucked. I had a fleshy flier
in the middle that oozed into my seat forcing me out in the aisle where the attendants slapped me around with the
beverage cart."