If you're someone who travels by plane fairly regularly, you might just be interested to know that cabin crew staff have their own secret code words for all sorts of things.
They even have a secret word that they use to indicate that they find one of their passengers attractive.
So, if you're ever up for an ego boost while on a flight somewhere, listen out for the word "Cheerio" - and it might just make your day.
In fact, one cabin crew member from Australia, who goes by the username LTN330, referred to it as the "cheerio game" on a Cabin Crew forum.
The game in question is played when passengers are disembarking from the plane and involves opting for the word "cheerio" - rather than other pleasantries like "goodbye" or "take care" - if you like the look of a passenger.
The airline employee wrote: "There's the cheerio game you can play when passengers disembark. When you're standing there going 'buh-bye, thank you, take care' etc when you see someone you fancy, you say 'cheerio'. You need to do it with a buddy and the challenge is to keep a straight face."
But that's not the only code words used by flight attendants as a euphemism for something else. In fact, another person added that staff use "HR on board" as an acronym for Human Remains in order to indicate that a dead body is on board the plane.
They said: "A lot of freight gets shipped on commercial flights. One of these items was always called HR on the radios. HR was an abbreviation for 'Human Remains'.
"Some people die far away from where they want to get buried. They're packed in wood-framed boxes, so you would never know what was inside except by the strange shape of them."
And it doesn't end there! "Deadhead" is apparently used when an airline worker is on a flight but isn't doing a shift because the flight needs to take them from one location to another. Also, "Crop dusting" means someone has wandered down the aisle to let out a fart!
Finally, the process of monitoring whether passengers have their seat belts on is called "crotch watch".
