The etiquette of life is pretty different when you’re in the air, full of rules that do everything from stopping people being jerks to preventing the plane from doing a nosedive. If you’ve half-watched the cabin crew do the safety demonstration enough times, one of these that is probably burned into your brain is a variation on the words “ smoking is not permitted on this flight”. However, this doesn’t always mean that people pay attention to it. While it may seem like an obvious rule that appl…

"We have rules."

Do not mess with them.