One of the best things about traveling by plane is the infamous airplane seat yank.  You're sitting there, enjoying your ice-filled drink, your miniature pack of pretzels, and your "in-flight entertainment", when all of sudden, one of the jerks in the row behind you uses your seat for leverage.  They yank down on the headrest as they pass by and then just go about their business as if nothing happened.  Meanwhile, you're shaking like a bobblehead doll and you spill your drink and your miniature pretzels all over the place.  You turn around and give the "hey buddy thanks for using my seat to balance your overweight body; I hope you fall in the toilet" look and you resume your business. 

I personally make it a point to not do this.  I don't think I'm a better person for doing this; it's just that I try to do my little part to make the world a better place (actually it's because I don't want to start a fight; airline travel is pretty hostile as it is).  Whenever I'm climbing in or out of my row, I use my own armrests for balance and I make sure I don't touch the seats in front of me.  I know I hate being woken up by the idiot behind me who decided to drink a 64-ounce coffee before getting on the plane.  Why should other people suffer for one stupid person's actions? 

But at the same time, I sort of enjoy watching this happen to other people.  I can see it before it even starts to happen.  There's a guy sleeping in seat 13A, a lady reading in 13B, and a guy watching a movie in 13C.  A lady in 14A has an overactive and/or small bladder, so she gets up to use the bathroom about 6 times.  Every time she gets up, it's the same deal:  She yanks 13A to get out of her seat, yanks 13B to keep from banging her head, and yanks 13C to get over the last armrest.  As she walks to the back of the plane, she gets three dirty looks from three angry, awakened, distracted people.  When she comes back, she repeats the same exact process as if nothing happened.