The brother/sister roleplay was hella fun. I was in character as soon as Master opened the door for me, and we didn't break character until we were lying together on the bed going, "....Whew!"
Master and I are both actors and we both play table-top RPGs, so I think we applied a lot of that to our playsession. The only problem is, I'm not the greatest at improv and I didn't spend a whole lot of time thinking about my character beforehand. "Her boyfriend just broke up with her... and she wants to bang her older brother," was about the extent of her characterization. Still, I think I did all right.
I also discovered that seduction is DAMN HARD. I don't really seduce very often (which is partially why Master wanted to do this scenario), and what made it even more difficult was that we both knew it was a farce; I wasn't really seducing Master, since he already wanted to sleep with me, but we both needed to figure out how many of the perfunctory motions I had to go through before he could "cave." It's a delicate balance between "LOLOK" and completely shutting my advances down.
The sex itself was... frantic. It was desperate. It was guilty. It was awesome. Throughout the entire scene the sexual tension was thick in the air, and I was wet even long before the first kiss. Though, as Master remarked afterward, "It was hard to think of something to say other than, 'Oh, Sibling-Pronoun.'" At one point I almost slipped and called him Master, but I stopped myself. :3
However, throughout the entire scene I had the weirdest urge to say something completely off the fucking wall. Like when my "brother" insisted on using a condom, I had to bite my tongue to keep from saying, "Yeah, we don't want any freaky-deaky inbred babies!" And in the middle of sex it required some real willpower to keep from saying, "Oh man, you fuck just like Daddy!" I have no idea why I wanted to say weird shit like that. I mean, yeah it would have been hilarious, but it would have entirely broken the mood of the scene. Which may have been the reason - I wanted to remind myself (by forcing Master and me to break character) that this wasn't real, that we aren't actually siblings.
Or maybe I've just heard one too many "inbred hillbilly" jokes.
You know, this is going to sound weird, but the sexual tension in the early part of the scene actually reminds me of when Master and I first started dating. (Three years ago! My, how the time flies!) Before we started having sex - before we even kissed - Master would invite me over to his room for "platonic sleepovers." We would both be fully clothed and wouldn't do anything else besides caress each other's arms, backs, and bellies, but holy crap would my panties be soaked by morning. I wanted to have sex with him so badly, and I knew that I probably could if I just asked. But I also knew I shouldn't because I was a virgin and he was the handsomest boy at school and we weren't in a serious relationship and blah blah blah. It was bad. It was naughty.
But God-damn if it wasn't hot.
(As an aside, does anyone have any recommendations for a good beginner's anal plug? I can take one finger easily now, but the jump in width between one and two is proving a little difficult; I think something more tapered (like a plug) would be helpful.)