A flight attendant has offered up some cheeky tips for passengers wanting to become members of the mile high club.
Cabin crew member Marika Mikusova has been spilling the beans on what happens during flights, and holidaymakers trying to get away with a romantic tryst on-board is not uncommon.
However, according to Marika, those wanting to join the club won't need to fork out for expensive First Class suites - apparently, economy cabins have some of the 'safest' places for getting away with it.
She writes in her book 'Diary of A Flight Attendant': "The lavatories in economy class are by far the 'safest' place to join the mile-high club."
It isn't her only piece of advice.
She added: "Economy class is so vast that you can barely see the end of it. And it has several lavatories. It's more practical to use a lavatory that has only one door.
"Not the one in which the door has to 'fold' to give you enough room to even step inside."
Marika said the best time to "join the club" is when the flight attendants are chatting in the galleys between serving, and the lights are dimmed throughout the flight.
It's worth noting that the mile high club could land you in hot water.
While there is no specific UK law forbidding sex on a plane, you may well fall foul of other, broader laws if you are rumbled.
Under section 71 of the Sexual Offences Act 2004, it’s illegal to have sex in a toilet that the public has access to, with fines of £1,000 for rule-breakers, and a possible six-month prison sentence.
You could also get done for outraging public decency if you're caught by a fellow passenger.
Cabin crew have previously revealed how they react when they catch people.
One airline worker wrote on Reddit: "I've only encountered it a few times in my five year career. It was almost always on red eyes or overnights to Europe.
“We had one on a flight to Rome that was rather interesting.
“The couple didn't know each other at the start of the flight, and despite being on opposite ends of business class, somehow found a way to be in the same seat mid-flight.
“They decided to go at it sans-blanket, at which point we had to ask them to separate for the rest of the flight."