Photos: 1. Feet of fury – Passengers who use their feet as weapons topped Expedia's list of onboard etiquette violators in its 2014 Airplane Etiquette Study. Some 67% of those surveyed find rear seat kickers very annoying. Hide Caption 1 of 10

Photos: 2. Dereliction of duty – Parents who seem to forget they are flying with children dependent on them for snacks and entertainment are a nuisance to 64% of those surveyed. Hide Caption 2 of 10

Photos: 3. Unwashed masses – Stinky passengers are objectionable to 56% of fliers. Hide Caption 3 of 10

Photos: 4. Audio assaults – Passengers who talk, play games or listen to their favorite songs or shows at top volume aggravate about half of those surveyed. Hide Caption 4 of 10

Photos: 5. Aggravating indulgence – If you can't remember your flight, you might be a boozer. Half of surveyed fliers think you're an unpleasant traveler. Hide Caption 5 of 10

Photos: 6. Big-time small talk – You may be excited to meet new people on your flight, but 43% of fliers find in-flight chatterboxes annoying. Hide Caption 6 of 10

Photos: 7. Gross overpacking – Carry-on baggage offenders delay everyone by trying to pass off their 40-pound duffel bags as "personal items." Nearly 40% of fliers object. Hide Caption 7 of 10

Photos: 8. All elbows – The armrest hog never learned to share, and that upsets 38% of fliers. Hide Caption 8 of 10

Photos: 9. Relaxation at any price – The seat-back guy, aka the seat recliner, doesn't care about the impact of his recline on the people behind him. That's why 37% of fliers are annoyed with you. Hide Caption 9 of 10