X-Ray
"Booth, can you take a look at this? I can't quite... what the hell is that!"
Booth, startled, kicked back from the desk and slammed the laptop lid closed. "Nothing!"
"Open that lid, Booth. That looked suspiciously like an X-Ray of a man receiving fellatio."
"Well, yeah, but I think of that as 'nothing.'" He reluctantly opened the laptop for her inspection. "Jared sent it to me. He thought I'd find it funny."
Booth studied that image. "Booth, that is one of the more appalling things I've ever seen - and you know the sorts of things I've seen."
"Oh, come on, Bones. Yeah, it's tasteless, but is it really that bad?"
"Booth, look at it. You can clearly make out her whole head, and the top of his scrotum."
"Um... yeah, that's the whole point. It wouldn't be fellatio if that wasn't happening."
"And that means that her brain and his testicles were exposed to a very signficant amount of radiation for this image. She could suffer impairment, and he was quite possibly rendered sterile. At the very least, his sperm were damaged at the genetic level."
"Sheesh, you're right. I didn't..."
"Never mind." Bones said, leaning back. "It's a fake."
"Huh? A fake?"
"And not even a good one. Here, look - you can see his pubic and body hair in the image, and hair never shows up on an X-Ray. And if you could pick up his hair, you should be able to see her hair as well. As the skull is clearly a woman's, that would mean that she shaved her head."
"OK, I can see that..."
"Further, the two halves of the image have completely different exposure levels. On On the right, you don't see any bones, just a solid mass. And it's not a screen of any kind - the edge shows the contour of his body perfectly. But on the left side, you can see through most of her skull and neck. If these were taken at the same time, we'd be able to see his pelvis. This is definitely a fake photo."
"I'll tell Jared you said that - while telling him to not send me this kind of crap any more."
"You know, Booth, if you find this sort of thing stimulating..."
"I don't! I don't! I really don't!"
She sighed. "That's a shame. Angela once showed me on the Angelator an MRI of a couple engaging in sexual intercourse, and it was truly fascinating." She caught his eye. "And much safer."
Author's note: the image referred to above does exist. If you're curious enough, just plug "X-Ray fellatio" into Google Images.