India, Feb. 22 -- While flying, people are expected to behave in a certain way to ensure that their journey and that of others travelling with them remains safe and pleasant. However, there are occasions when the behaviour of unruly passengers makes one wonder "Didn't they get the memo?" From trying to open a flight door midair to punching a steward, here are some recent stories of flyers that will leave you in disbelief.

This shocking incident took place when an Aeromexico flight was waiting for takeoff from the Mexico International Airport. A man opened the exit door of the flight and climbed onto the plane's wing to go for a walk. He did this after waiting inside the plane during a five-hour delay. He was arrested once he re-entered t...