There are lots of frustrating things about long-haul flights, from bad aeroplane food, to long queues, and stuffy plane cabins.
But this woman may have had one of the most unpleasant experiences, when the passenger behind put her feet up next to her.
See also: Where is the best seat on a plane?
She started filming the feet on the side of the cabin next to her, and her grossed out face as she looked at them.
Jasmine May found herself sharing the armrest with her neighbour's feet
The video shows how personal space was definitely invaded
The video has been viewed more than 18million times, with tens of thousands of shares and comments.
One viewer commented: "I think my elbow would "accidentally" smash out on those toes. She'd likely remove them quickly..."
Another asked: "Has the owner of these feet come forward yet?"
Several people said the incident was 'disrespectful' and hoped that Ms Mays said something to the person behind her.
She was clearly horrified by what was happening
The Nevada Zumba instructor's expressions went viral as people sympathised with her
She filmed the incident and her facial expressions went viral
Ms Mays didn't say where she was flying from or to, so it's not clear how long she might have had to put up with this in a worst case scenario.
But she made it clear she was not enjoying the experience as she grimaced each time she flashed the camera to herself in her video.
Ms Mays is a Zumba teacher in Las Vegas.