This is the classic "I want to dissolve into the floor" feeling.
When you have to remain professional on the outside while your soul is doing a backflip of agony.
The moment your brain stops working because the cringe is too high.
Someone hiding under a hoodie, a person buried in a pile of laundry, or an ostrich with its head in the sand.
A very calm person sitting in a room that is literally on fire (the "This is Fine" meme), or a Victorian painting of someone looking profoundly distressed.