Seeing inside or through an opaque object, as if by x-ray vision. Often this is seeing inside the body during sex.
Typically rendered as a partially transparent overlay, or a cut-out. Not to be confused with a cross-section, which is a separate inset showing an internal view. Rule of thumb: It's x-ray if Superman could see it with x-ray vision.
Use x-ray film for the images taken with actual x-ray machines (or any medical device that takes cross-section images).
