A/N: This is another fic from the "more smutty than cracky" department, written for the Sextember ficathon over at bones_ga on LJ; the prompt was: Brennan talks Booth into trying a kinky/different/unusual sexual practice. It's up to you what it is and how it goes.

Given my past as a slash writer, I guess it's not surprising that I've always toyed with the idea of writing Booth with another guy, but there never was a male character on the show who worked for me in that regard. With this fic, I finally found a way around that problem – and I even managed to stay true to my OTP while I did it.

Therefore, although this is very much a B/B story, there are explicit descriptions of m/m sex, so if that's not your thing, you know what you have to do… (Hint: reading it anyway and complaining to me afterwards isn't it ;-)

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The Slasher in the Scientist

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Booth stormed into Brennan's apartment and stopped dead in the middle of her living room – not because of her exasperated voice that was calling for him from the corridor, but because there was nowhere left to run if he didn't want to lock himself in the bathroom (not that he wasn't tempted).

"Booth!" Brennan, puffing like a steam engine, finally made it through the door and waddled up to him with all the gracelessness of a heavily pregnant woman who is too mad to give a damn how she looks. "Stop this, you're being completely ridiculous! I've told you, I don't have a problem with –"

"And I've told you I do!" Booth snapped back without turning around, desperately wishing for the ground to open up and swallow him so she wouldn't see his burning face.

"Booth." Brennan's tone softened, and even though he flinched when she put her hand on his shoulder, she didn't pull back. "Please look at me."

With great reluctance, Booth turned around at last, although he still couldn't bring himself to meet her gaze. "Bones, I swear, I had totally forgotten that stuff was there…"

"That much was obvious from your reaction." Brennan spoke slowly and calmly, as if addressing a frightened child. "It's no big deal, really."

"Yeah, right." He still wouldn't look into her eyes. "It's just the mother of my unborn child helping me move my stuff from my apartment to our new home and coming face to face with my porn stash for her trouble."

"So? It's hardly uncommon, Booth, and I would have assumed –"

"Bones, please, can we just drop it?" Booth, now utterly mortified, turned away again, desperate for this conversation to be over. "I swear, I haven't looked at the stuff in years, and I'm going to burn it as soon –"

"Actually, I wanted to take a look at it," Brennan cut him off.

Booth whirled around. "What? Why on Earth…"

"I'm interested in finding out more about your sexual preferences," she explained, completely undeterred. "Don't get me wrong, I considered our sex life highly satisfactory until my doctor advised against penetrative intercourse last month, but you still seem reluctant to give me specific information about your preferred sexual activities. Therefore, your choice of pornographic material might provide me with some insights –"

"Bones, for the love of God, stop!" Booth was half a step away from falling to his knees and begging if that would get her to shut up. "I don't want you to go through my old porn magazines, I haven't touched them myself for years – not since…"

Brennan raised an eyebrow when the sentence petered out into embarrassed silence. "Since?"

Booth remained stubbornly quiet, although his face turned an even deeper shade of crimson. After a moment's reflection, Brennan slowly began to smile. "Is that what you were talking about when I asked you whether you were sexually active? You know, back when I was dating Mark and Jason?"

Booth closed his eyes in resignation. "Just take my gun and shoot me, okay?"

"Why is this such a difficult topic for you?" There was a hint of laughter in her voice that made Booth cringe with humiliation. "Pornography is a widespread cultural phenomenon, there's nothing shameful or unusual about it! The vast majority of adult males enjoy it, and even though there's a certain societal stigma to it, I assure you that I have absolutely no problem with the knowledge that you do too!"

"But you should, okay!" Booth exploded. "You shouldn't be standing here and telling me it's fine, you should be mad and disgusted and –"

"All right, that's enough." Brennan's sharp tone brooked no argument. She grabbed Booth's hand and pulled him towards her bedroom before he could put up any kind of resistance. "Come with me."

"Bones, what – "

"Be quiet." She pushed him onto the bed and then started rummaging through one of the drawers in her dresser. "Since we're clearing out my apartment next week, you would probably have seen this anyway at some point, but I guess we can shorten this debate if I show it to you now."

With that, she turned towards him and dumped a stack of glossy magazines into his lap. "Here, perhaps this will make you feel better."

Booth, utterly dumbfounded, stared at the cover of the magazine on top of the stack, from which a couple dressed in black leather was staring back at him. "Are you saying that is…"

"My porn collection," Brennan stated matter-of-factly. She carefully sat next to him on the bed, shifting a bit to accommodate her impressive girth, and added, "The visual part, at least. I own a wide selection of written erotica as well, but that genre isn't placed under the same kind of taboo, so it's not relevant here. Take a look."

Booth wouldn't have thought that it was possible for his jaw to drop even further, but he should have known better after eight months of sleeping with Temperance Brennan. "Are you kidding me?"

"Not at all." Brennan looked at him expectantly. "I'm hoping that the perusal of material which reflects my sexual fantasies and desires will make you more comfortable with the fact that I've seen yours."

Booth swallowed, but figured that there was no way for him to tell her no right now if he didn't want to make the whole situation even worse. He quickly thumbed through the first few magazines – thankfully, the leathery stuff wasn't as extreme as he had feared, and some of the other things he saw might even have appealed to him under different circumstances, but then…

"Uh – Bones?"

Brennan raised her eyebrows at his questioning tone, but otherwise seemed unperturbed by the sight of the magazine he was holding up. "Yes?"

"This stuff is… all guys?"

She gave him a quizzical look. "You know I'm a heterosexual woman, so my interest in men really shouldn't come as a surprise to you."

"Yeah, sure, but…" Booth found himself struggling for words. "I mean, you're aware that this is gay porn, yes?"

Brennan rolled her eyes. "Yes, Booth, I am aware. Plenty of heterosexual women find the erotic depiction of male homosexuality arousing; there's a whole sub-genre of gay erotica that caters specifically to a female audience."

"Seriously?"

The smirk she gave him in return was downright dirty. "You didn't assume that lesbian porn was produced mainly for lesbian women, did you?"

Booth's blush returned to its earlier nuclear brilliance at that, but thankfully Brennan decided to let him off the hook for once. Instead, she inched closer and stated in a tone that was much softer and at least half an octave lower that her earlier words, "I admit that I've had quite a few sexual fantasies that included you and another male protagonist."

"Whoa!" Booth jerked away from her as if stung. "Seriously TMI here, Bones!"

She narrowed her eyes, as if deliberating something. "Does that mean that you've never imagined me in a sexual situation with another woman?"

Booth almost choked on his tongue. "No, I – I mean… of course not!"

Brennan's eyes narrowed further, making him feel very much like one of the skeletons on her table. "So you're saying that if I told you there's a videotape of Angela and me engaging in mutual manual stimulation while we're in the shower together, you'd have no interest whatsoever in watching it?"

Even half-dead from embarrassment and more than a little distracted by the sudden onslaught of mental images, Booth possessed enough relationship smarts to recognize a loaded question when he heard it. He took a deep breath, struggling to regain at least a semblance of composure, before he asked faintly, "Bones, is there such a tape?"

She shook her head. "There isn't; I have to admit that I've got very little experience when it comes to same-sex acts. I once tongue-kissed another female student on a dare in college, but that's about it."

Booth was beginning to breathe easier when she blindsided him completely by adding in an almost casual tone, "What about you?"

It took him just a split second too long to react, which was enough for her to take notice. Temperance Brennan might not know the first thing about people in general, but she sure knew him.

"Booth?" Her tone was calm; gentle, even. "You seem reluctant to answer my question."

He pressed his lips together and looked away, but still didn't say anything.

"Come on." She elbowed him playfully in the ribs, as if to ease the sudden tension that was radiating off him. "Whatever the answer is, you know you can trust me with it."

Booth took a deep breath and tried to pull himself together. She had cut right to the heart of the matter – he did trust her, and if they were going to build a life together, she probably deserved to know the truth, no matter how much the prospect of that conversation freaked him out.

"I… just once, a long time ago."

She didn't seem shocked by the revelation, but then, he hadn't really expected her to be. Instead, she reacted in exactly the way he had feared she would, because now that her interest was piqued, she wasn't going to let it go until she had all the answers.

"Are you saying that you had sex with another man once?"

Booth's only reply was a reluctant nod.

"And when you say 'sex', you mean..."

Booth sighed, but there was nothing for it now. "Something even Bill Clinton would have to call sex."

"Oh." She was quiet for a moment, as if deliberating; then she asked hopefully, "Will you tell me about it?"

"I… yeah, okay." It seemed to Booth that he had somehow moved through the state of utter mortification and come out on the other side, because he felt surprisingly calm. His face was burning again, but now that they'd reached this place, he was going to see this through if it killed him; he owed her that much.

Brennan scooted backwards until she was fully on the bed. It took her a while to find a comfortable position, but finally she was lying on her side, half-curled around her pregnant belly, and patted the empty space beside her. "Come here."

Booth obediently stretched out on his back next to her, although he couldn't bring himself to touch her right now. He crossed his arms behind his head and closed his eyes, figuring that this would be easier if he wasn't looking at her, and began to talk.

"Back when… after my tour in Iraq, I was having a pretty bad time, you know – gambling and stuff, and once, I went to Vegas with an army buddy of mine, Hal. He was a good guy – we weren't best buddies or anything like that, but we'd served together for a while, and he'd pulled my ass out of a pretty tight spot once. Anyway, we were in Vegas, and I kept losing until I was totally broke. Hal did better, and he let me crash in his hotel room because I had no money left to pay for my own.

We got wasted in front of the TV – and they had all these pay-TV channels, so we ended up watching some porn flick. I had never… you know, watched that kind of stuff with somebody else, but I was gone far enough not to care any more. So I'm sitting there on the couch, wondering if I should hit the shower to jerk off or just do it then and there, and I take a swig from the bottle and then hand it over to Hal, but instead of taking it from me he looks straight at the tent in my pants and says, 'I could help you with that, you know.'"

Brennan had inched a little closer while he talked; now, sensing his hesitation, she snuggled up to him and placed a calming hand on his chest. "What did you do?"

"I… I laughed." Booth cleared his throat, but his voice was still a little unsteady when he continued. "It was just so – so surreal, you know? I mean, I'd been nothing but a green kid when I'd enlisted, and I'd had all these ideas about how my life was going to be, and now here I was in that crappy hotel room in Vegas, drunk and broke and horny, and my buddy was coming on to me. It was just… I don't know, I could only laugh, and I thought, what the hell, how does it even matter any more?"

"So you told him yes?" Brennan drew up her leg and draped it over his, leaning into him as far as her belly would allow.

"I think so, it's… it's all a little fuzzy from that point. The next thing I know, he's on his knees with his head in my lap, and – well…"

He didn't finish, figuring that she had gotten the message. Brennan was quiet for a moment, but then she asked, "Did you enjoy it?"

Booth swallowed, but he had decided to be honest. "You see, Bones, guys – to this day, they just do absolutely nothing for me, but… it was still the best blow job I'd ever gotten in my life until then. He… he just knew what to do, and once he'd started, I pretty much stopped thinking altogether and just let him."

Brennan was shifting her weight, obviously uncomfortable with her position, and the increasing pressure from her leg on the inside of his thigh didn't help Booth's concentration. "And then?"

There was something in her tone that made him open his eyes and look at her. Her face was inches away from his, and she looked a little flustered, as if her calm composure was finally slipping. "You really want to know the details?"

"Of course," she replied promptly. "From what you said earlier, things didn't stop at fellatio."

"They didn't." He had made it this far, he would somehow manage to tell her the rest. "Even with all the alcohol, I was close in no time at all, and then he suddenly had a finger up my ass…"

He could feel Brennan's low chuckle against his chest. "We both know how much you like that, don't we?"

Booth felt his blush returning full force when he admitted, sounding a little sheepish, "I guess that's how I found out, you know."

"Interesting." Booth had been too caught up in his own personal purgatory to pay much attention to her reaction until now, but he would have had to be dead not to recognize that low, throaty tone for what it was.

"Bones, are you getting off on this?"

"Does that bother you?" Jesus, she was purring.

Booth swallowed again, with more difficulty this time. "I… I don't know?"

"Try not to think about it, then – just go back to where you stopped. I assume the actions you described were enough for you to achieve orgasm?"

"God, yes. I came so hard that I thought I'd pass out, and when I opened my eyes again, he was still on his knees in front of me, and he said… he gave me that look, you know, and he said, 'Seel, you have no idea how much I want to fuck you right now.'"

Brennan's sharp intake of breath made him fall silent. When she didn't speak, Booth finally asked, hesitatingly, "Bones, you okay?"

"Very much so." In spite of her reassurance, she sounded as if she did indeed have trouble breathing. "You let him fuck you?"

After eight months of sharing her bed, Booth knew only too well that there was only one kind of situation that made her forget to be clinical in her word choices, but he honestly had no idea how to deal with the fact that this admission had gotten her there. "Look, I really didn't think what I was doing, I was drunk and – "

"Booth, there's no need to justify yourself to me." Her knuckles brushed his hip as her hand slid between her thighs, and then she asked, even more breathless than before, "How was it?"

"Weird, mostly." God, she was rocking against him now. "I mean – it didn't hurt or anything like that, so it wasn't bad, it just… Bones, I'm sorry, I can't talk about this while you're getting yourself off next to me!"

"Then I suggest we switch," she panted without stopping the rocking motion of her hips, "you get me off, and I do the talking." Before Booth had time to wrap his mind around that, she took his hand and pushed it underneath the elastic band of her maternity pants. With minimal fumbling, she managed to guide him right where she wanted him, and it was Booth's turn to draw in a sharp breath when his fingers met slick, silky warmth. He still felt more than a little weirded out by the whole situation, but this at least was familiar, this was something he could do for her.

Brennan's free hand clutched at him when he started stroking. Mindful of the doctor's 'no penetration' rule, he merely let his fingers skim her entrance and focused his attention on her clit instead. She kept her hand on his for a moment, setting a slow, languid pace; when she was satisfied, she dug her fingers into his upper arm as if anchoring herself, and then began to speak.

"Booth, I'm imagining that scene now – you don't have to tell me how it really happened, but I'm picturing you braced against that couch, and Hal is behind you, his fingers digging into your hips as he pushes into you, slowly and carefully so he doesn't hurt you. He tells you how good you feel, how hot and tight, and you…"

She gasped when Booth pressed the heel of his hand against her mound, his fingers dipping between her folds to spread the slippery wetness before going back to her clit. "Oh yes, just like that… and you're moaning too, and he pulls back and starts thrusting, slow and steady, but you tell him to go faster, to fuck you harder – and then you start touching yourself, because you're hard again and desperate to come. You stroke yourself in synch with his thrusts, and he reaches around and covers your hand with his, both of you stroking your cock together until you cry out and come all over your fingers. He tells you how he's going to lick it off, afterwards, because he wants to taste you once more, and then he slams into you again and – oh God, yes, Booth, yes…"

The rest of her words were lost in a long, drawn-out moan; she tensed all over and then, with a soft, breathless sigh, went limp against him.

Booth flopped back on the bed, breathing heavily. Watching Brennan come apart under his hands from the image of him on her mind had left him achingly hard, no matter how very much not in the mood he had been before and how utterly inappropriate it seemed for him to get all hot and bothered over his girlfriend casting him as the star of her personal imaginary gay porn show.

Thankfully, Brennan had her eyes closed and didn't notice his predicament; the only sound she made was her panting, and Booth could see her pulse racing against the delicate skin of her neck. He closed his own eyes, concentrated on drawing slow, steady breaths and tried to will his hard-on away.

He didn't have much luck with that, though, because Brennan's movements soon broke his concentration. When Booth opened his eyes, he saw her hovering over him with a wicked little smile on her face. As she leaned in to kiss him, she reached down to cup him through his pants and, giving him a playful squeeze, whispered against his lips, "I could help you with that, you know."