It was time for the regular nightly rituals. Booth was busy brushing his teeth, while Brennan sat propped up on her pillows reading. She usually read anthropology journals before bed, so Booth was curious...what she was reading tonight looked different.
"Whatcha readin', Bones?", he asked as he rinsed. "You look really interested."
"Oh...I borrowed Angela's copy of The Joy of Sex."
Booth nearly choked on his toothpaste. "The Joy of Sex? Why would you borrow that? Aren't you satisfied with how things are going? I don't think we need instructions."
"I'm quite satisfied, thank you." She smiled and winked at him. "However, the authors have diagrams of sex positions that are advantageous for someone who has a bad back. I was wondering if we should try one to see if it's helpful for you."
"So what...you want to run an experiment? I gotta tell you...that kinda takes the romance out of the process, if you know what I mean."
"No...it's not like Masters & Johnson...but next time your back is sore we could try them. Look. Here's a picture of one."
Booth turned the book in several different directions, trying to get the best view. "I'm not even sure we can get arranged in that way, are you? That looks uncomfortable."
"Well, it says in the book that it might take practice before it's comfortable. But there are others to try. Here's one you might like better…"
"Yeah, that one looks a bit more practical. So what does it say about times when my back doesn't hurt? Any suggestions in there about that?"
"I think this position looks interesting...although we may almost be too old to bend like that. Or maybe this one…"
He took the book from her and, smiling, turned off the light. "Let's experiment."