Kermit has recently come forward to deny claims that he's actually a puppet (as seen here on the Simple Math a few weeks back). He is now stating that the x-ray in question was taken during a recent prostate exam and that he has no idea how that information reached the street. While I'm not certain that his story is true, this picture does prove without a doubt that the frog has the equipment to back up his story.
If I were him, I'd keep better tabs on my x-rays and possibly look into a malpractice claim against his proctologist. More news as it becomes available.