Another day, another flying shoeless wonder.
The curse of passengers relaxing just that bit too much in the air has struck once again.
A video on Reddit, somewhat appropriately entitled "Aaargh!", shows one very unamused young flyer with an unwanted human hoof as a companion.
The clip doesn't specify when or where it was taken.
The comments needless-to-say range from "disgust" to incredulity.
"How would someone even remotely find this okay to do?" asked one person.
"How do people remain silent? I'd be turning around and shaming the person the very second a nasty, disgust foot slithered up next to me," wrote another.
"I don't fly much but if anyone ever puts their goddamn foot into my seat like that it's getting coffee spilled on it" threatened another.
Coffee seemed a popular choice among commentators, with water and tickling preferred by others.
Some questioned whether the foot belonged to someone travelling with the camera operator.
This comes as another passenger was caught scrolling the entertainment screen with their feet.
In case you’re wondering why we wipe everything down on planes (as seen on our IG Stories)... #SAVAGE AF 👣😂✈️#flyingfeet 📸: @JErikOlvera on Twitter!! 🙌🏼 EDIT: YES SHE HAS ARMS. • • • #passengershaming #instagramaviation #comeflywithme #airlinelife #airplaneetiquette #frequentflyer #crewlife #plane #aviation #cabincrew #avgeek #cabincrewlife #flightattendant #flightattendantlife #stewardess #flightattendantproblems #travel #flightattendants #instapassport #aviationgeek #FAlife #airtravel #travelgram #traveltips #pilotlife #frequentflier
The Delta passenger was filmed by Erik Olvera, who posted the 35-second clip to Twitter last week.
"I fly a lot and this, by far, is the most disgusting thing I've ever seen on a plane," Olvera tweeted. "Bringing #antibacterialwipes. Where's @NaomiCampbell when you need her in-flight wipe down advice?"
The video has had more than 2 million views and 3,000 retweets.
Last year, Conan O'Brien sidekick Andy Richter was grossed out by a passenger who kept airing out his bare feet on the seat and TV screen in front of him.
There was also the kid who told off a 'stinky feet' woman on a US plane.