Gross. I’m majoring in X-ray tech right now and hope I never encounter skid marks

Some people don't seem to have any form of shame.

Or maybe he'd already shat his underwear, and the skid marks were a much less extreme form of punishment than what you could've gotten.

Maybe he wasn’t wearing any underwear in the first place ;)

Maybe he wanted you to remember him for a long time after the X-ray)) definitely he cannot flirt

At least he didn't show up to the hospital in dirty underwear. Every mother's nightmare...

No disposable cover? In hospitals in the U.K.,we have a roll of paper at the top of the couch / bed / whatever, and between patients you dispose of the used bit and roll down some more. Makes problems like this a lot easier to deal with, and means you don't catch lice or impetigo from the previous patient.