Passengers' new feat of depravity with mid-air act

Footsie at 30,000ft: The bizarre PDA in American Airlines first class. Photo / Instagram

Two passengers have been publicly shamed after they were snapped playing footsie across the first-class headrests.

A disgusted fellow passenger Laura Lake uploaded pictures of the flirtatious feet after she was disturbed by them on her American Airlines flight.

Those feet, belonging to a man and a woman, were pushing the boundaries of decency.

The act so upset Lake that she began documenting the display on Instagram.

As the feet inch towards each other in the series of images, the bare footed passengers get progressively more adventurous. Not satisfied with merely resting their feet on the divider between them, the woman's foot soon landed on the back of another passenger's headrest.

'Guy in seat in front NOT impressed': Wandering feet. Photo / Instagram

"Guy in seat in front NOT impressed when she finished by resting her feet over his television! #passengershaming," wrote Lake.

One presumes the two passengers - baring their soles to one another – were already acquainted.

She captioned the PDA posts: "First class seat — $1000.

"Too many drinks in the airport before boarding — $100.

"Ointment to cure WHATEVER their feet will have after using rest rooms barefoot — $20.

"Passing out after playing what she thought was a sexy game of footsie over the first class divider wall … priceless!"

Sadly this sort of barefoot display is not uncommon.

Sadly this sort of barefoot display is not uncommon. Photo / Instagram

"Passengers without shoes on" was well up there on a list of things most likely to disgust your cabin crew.

"Please do not ever walk into a toilet with bare feet," wrote one attendant on Reddit. "I promise you, 9 times out of 10, that is not water on the floor."