Times have changed over the years, but one particular offence has steadily climbed its way up the list.
inconsiderate behavior
Anyone who has ever been on board a commercial flight would have probably noticed that aircraft lavatories tend to be smaller than regular public restrooms. Compact as they may be, though, the toilets on most commercial airlines provide enough room for an adult to get their business done. In fact, we’ve even heard of all those “mile high club” stories, so it’s probably all right to assume that those minimalistic restrooms are spacious enough for even two adults to slip in.
However, one Chinese mom on board a Shenzhen Airlines domestic flight felt that the toilet was too small, and made her son defecate on the floor of the rear cabin.