1. Seat kicking/bumping/shoving -- Plane seats are incredibly light and transmit the slightest touch. Every time you fidget with the tray table or seat pocket, the feeling is amplified to the poor schlub in from of you and it feels like you're in a kickboxing match with their seat. Are we there yet?
4. Bare feet -- "Feet nudism" was a common complaint in CNN's unofficial survey. Honorable mentions are people going barefoot to the bathroom on a plane and aisle-sitters parking feet, legs, and other body parts in the aisle.
5. Neglecting personal hygiene -- A smelly seat neighbor can be a seemly inescapable way to make your olfactory nerve cry. Air crew carry deodorant on board for this very reason, though they shouldn't have to.
6. People behind you trying to disembark first -- These are not primitive times - the queue has been invented. Why does flying make so many people regress to a time before such things? Patience really should be a virtue.
9. Coughing, sneezing, germ sharing -- There is no way boundaries are more violently shattered than when someone near you has become an incubus of some viral agent and insists on sharing spit globules with everyone. Just think, you get to share a bathroom for hours.
10. Poaching the empty middle seat -- Just when you think the middle seat is empty, the selfish boor next to you expands into it with a coat, book, or inflatable neck support. When space is at a premium, share it, don't hog it.
14. Yapping on cell phone -- The plane has barely touched the ground when a person whips out their phone and desperately attempts to contact someone. Don't worry about the shouting or number of times you need to repeat the same phrase, I'm sure the reception will improve any second now.
15. Getting huffy when a neighbor leaves their seat -- A small bladder shouldn't stop you from enjoying the window seat, but you have to admit it can be annoying when someone constantly has to squeeze by you. When it comes to airplane toilet breaks, nobody wins.
16. Babies crying -- Being stuck in a giant tin can with a baby that sounds like a screeching broken record definitely isn't on the top of anyone's bucket list. Yes, we know they can't help it, but that doesn't make it any more tolerable.
17. Boarding before group number is called -- Having to wait until the end of the boarding alphabet can fire up anyone's anxiety thrusters. You can only watch as the overhead bins get stuffed before your carry on has a chance. But everyone needs to get on the flight eventually. Just because you drew the short straw this time doesn't mean you get to weasel your way to the front.
20. Abusing someone else's possessions in overhead bin -- Your belongings are neatly tucked away in the overhead bin when Senor Latealot comes lumbering down the aisle and proceeds to cram half his life possessions into the compartment meant for one personal item, crushing your nice new fedora in the process.
Polling at least a crowded plane toilet's worth of travel writers and other too-frequent fliers, CNN conducted an unofficial survey of the most rude and irritating things you ... sorry, other people, do on planes. Take a look at the top 20 answers.