Gasps allegedly resounded across a Qantas flight last week, after the airline accidentally played "Daddio," an R-Rated movie (MA 15+ in Australia) starring Dakota Johnson, across everyone's screens due to a technical hitch.

The incident went viral, sparking mirth (and an apology from Qantas); and also an etiquette question. Is it ok to watch an R-Rated movie on a flight, or is it an a**hole move?

See also: 9 new rules of in-flight etiquette to never break

Popular opinion is split, with some saying adults should have the right to watch whatever they like on a flight (and it's your seatmates responsibility not to look, or not to let their kids look if they don't like it), and others arguing you should show consideration to your seatmates and only watch movies that they won't find offensive. 

If this existential question is one that haunts you, we're here to answer it: here are seven etiquette rules for watching a violent (or raunchy) movie on a flight, without upsetting your seat-mates.

1. Consider your audience

If you're sitting next to kids, it's a no-go, and you're likely to get a (deserved) glare or verbal spray from their parents (like this Redditor, who watched the second Deadpool on his phone on a flight, without realising a kid behind him was watching it, until the scene where a character gets ripped in half). A baby or toddler, however? They aren't going to understand anyway; watch away. 

2. Time it right

There's a big difference between watching blood and gore get blasted across your screen, or a hot and heavy sex scene, at 9am in the morning on a short haul flight (read: weird, very weird) and watching the latest hollywood hit (which happens to feature a couple of risque moments) in the middle of the night on a red-eye flight (read: totally fine), while everyone else is either engrossed in their own movies, or asleep.  

3. Don't skip through the graphic parts

Stuck next to the Dalai Lama in full religious robe, but still desperate to catch up on the latest adult film? Worst comes to worst you can casually skip through the most graphic bits, right? Wrong. As I've learned from personal experience, this draws even more attention to what you're watching. So if you want to watch that slightly-rude flick, either commit to it shamelessly, or don't do it at all. 

4. Size your seat-mate up

A backpacker who smells like they haven't showered since they left their home-town is probably less likely to bat an eye at your Magic Mike movie selection than a prim-and-proper retiree who looks like they go to church every Sunday and worship at the altar of hairspray. You can't always be certain though: as one flyer found out the hard way (after being handed a note imploring them to seek forgiveness for being a sinner in the wake of watching a movie featuring Channing Tatum's oiled up abs), sometimes you can misjudge people...

5. Keep an eye on what your seatmate is watching

If you can't glean enough information about your seatmate from their outfit, keep a casual eye on what they are watching and - if you're worried about upsetting them with your movie-choice - match their energy. 

6. Watch it on your phone 

If you are sat next to someone who you fear will be made uncomfortable by a R-rated movie, and are determined to watch it anyway, consider downloading it in advance and watching it on your phone, where it will be slightly less in their face.  

7. Build a blanket fort

If all else fails, put a blanket over your head and the top of the seat in front of you, and watch whatever you want inside your own slightly-stifling cocoon.