Add to the myriad things that are totally-freaking-predictable about flying (the delays, lost luggage, and hitting turbulence the moment you start to piss) this list of unavoidable people. You have encountered them on absolutely every flight. Consider them your collective travel foil, and endeavor to never count yourself among them.
20. Terrible BO Guy
That almost-visible pungent musk is beginning to make people think the plane is having some serious mechanical issues. Even the sick dude 14 rows back is visibly distressed by the malodorous man-smell. Seriously, this guy could be an MIT valedictorian and he'd still be missing the one Degree he actually needs.
19. Halitosis Person
Want some gum? Here, take the whole pack.
18. Won't Stop Talking to You Row-Mate
I naturally put my earbuds in and closed my eyes as an invitation for you to talk to me. Seriously, lets prattle on about that scarf you're knitting.