Find something on youtube when I was searching bounding videos.
https://www.youtube.com/watch?v=u9KoL_BKU7M
https://www.youtube.com/watch?v=TBweCXw3sTU
It looks like a nursing care session, they wrap the patient into sheets and bind them tightly.
I said like that because everyone dressed like a nurse or a patient, and it seems that the person who was wrapped lying on the hospital bed.
Finally, when the person was fully wrapped, they bound him and move him to a cart, covering a large sheet on the top.
I am pretty sure it's a lesson about wrapping a person, did anyone here try that bondage?
It seems that the person who was wrapped in sheets really enjoyed, hoping there is a nursing care for me, it must be really fun been wrapped in sheets.

Maybe they really have a nursing care service like that? Anyone knows about that?