Flying in an airplane used to be a novelty, and also fancy. Now we are numb to the amazingness of flight, and everyone is a slob. Here are the worst of the worst. (A special thanks to Passenger Shaming, which collect and exposes deplorable in-flight behavior to the delight and consternation of the Internet.)

1. Keep your shirt on.

Sir, this is an airplane, not a .38 Special concert.

2. His dentist loves him, everyone else hates him.

He listens to music while he brushes because it distracts him from how gross it is.

3. A row of one's own.

This is a logical response to manspreading.

4. A fine mess.

This is why the people in first class look down on us.
Sources: Imgur | Passenger Shaming | Flyer Life