Modern air travel can be a pain in the neck. Between being treated like cattle, dealing with the TSA, and the exorbitant flight prices, the most you can hope for is a flight without delays, reasonable passengers around you, and a decent in-flight movie.
For one tallish guy on a Lufthansa flight, his journey got off to a bad start after a man who stole his aisle seat refused to give it up. The guy tried to get the flight attendants involved but they just assigned him the worst seat in the house. After his nightmare flight, he turned to the Reddit community to vent.
More info: Reddit