Living outside of the USA gives me the opportunity to travel many times in a year. I can say that I've definitely seen ALMOST everything on planes.
No snakes, but almost.
While traveling to North Carolina I decided to summarize all the "common" people I've come across during my travels.
1. The snorer
This one can be sitting on the first lane of the plane and you can still listen to his/her symphony.
2. The loud one
You get onto the plane with the mind set of just sleeping and relaxing the whole way until this person shows up, wakes you up and proceeds to talk to you the entire trip. They talk about their life and you try to keep your eyes open but most of the time it just doesn't happen.
3. The baby that doesn't stop crying
Okay, I understand that when your ears get plugged there's nothing that can heal that pain. Most of the times babies cry on planes due to this reason; I do feel bad for most but sometimes it can get a little annoying.
4. The one that wakes you up to go to the bathroom
If you sit in the aisle, good luck with this one. They always tap on your shoulder when you are in the middle of the best sleep. "Excuse me may I go to the bathroom?" Yeah, sure. You already woke me up.
5. The don't care of the volume
This person is easy to spot: they have huge headphones, and you can hear the boom of their music. They don't seem to care who is by their side; if you are lucky you can even listen to them sing some tunes.
And last but not least, because these are special occasions and I've seen a couple of these. (Don't recommend these to anyone that goes on a plane.)
6. The mani/ pedi girl
Yes — it's exactly what you think. The people who don't seem to care about anyone and start using their PedEgg and making all the noise in the world. Scratching their calluses and then painting their nails. My sister actually had this happen to her.
These are the most common people you see inside a plane, except for the last one, which is probably the most awkward situation you can experience in a plane.