As I write this, I intentionally omit descriptions and names of the participants, who are both consenting adults. I think it's fun for you, the reader, to imagine the object of your sexual fantasy on your own, instead of me describing the participant. Enjoy!
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It was the holiday season and my sister and I were visiting my parents in Florida. Our parents' home was too small for guests, so my sister and I had agreed to share the cost of a hotel room with two beds instead of getting two separate rooms.
After a night of great holiday meals and family time, we headed back to the hotel for the night. Once inside the room, we both laid down on our respective beds and my sister grabbed the TV remote and started thumbing down through the available programs. She stopped on all of her favorite shows like Say Yes To The Dress and the like, and I would groan at each one.
"Well, I'm sure you'd like to stop on a football game or something," she said, "but I don't feel like sports." She kept scrolling down until the on-screen guide got into the adult channels.
"Now you're talking!" I said kiddingly.
She looked over at me and said, "Yeah, I'm sure you'd love that!" She kept thumbing through that section and the titles of the shows ran the gamut from Cheerleaders Do This, to Horny Lesbians Do That.
After a moment, she said, "Do you watch a lot of porn?"
"Oh, I don't know. I suppose I watch as much as the next guy." I didn't let on that I loved porn and all the nastiness and just the thought of it made my cock start to stir with excitement.
"Well, I don't mind if we watch a little for a while." Without pausing to ask what kind of porn I liked, she just picked one channel and tuned in. The scene that came on the screen was an FFM threesome that was having a good time in the bedroom. A mature (MILF) brunette and a young blonde were fucking some guy. The MILF was being pounded from behind with the guy's cock, while she was licking and sucking and finger fucking the blonde's hairless pussy.
I glanced towards the mirror that was next to the TV and could see my sister's reflection. Before settling in, she had changed into her bedtime clothes - a thin t-shirt and sweat pants. She was laying there, gazing at the scene on the television. I could see her nipples were getting hard and were starting to show through the fabric of her shirt. She was sitting up with her back against the headboard with her legs out in front of her and I could tell her breathing was beginning to become shallow. I watched for a moment and was amazed at how erotic it was to be laying her watching a porno with my sister right there with me.
I turned my attention back to the television, and the threesome had switched positions. The young blonde was now on her back with her ass at the edge of the bed and her legs were spread wide for the guy. He slowly walked his dick into her hairless pussy while the MILF was beside her on the bed playing with the blonde's clit. He slowly pulled his cock out and just as the head was beginning to show, he would plunge back in. The MILF raised one of her own legs up and with her free hand began to finger fuck her own pussy.
I glanced back at Sis and now her legs were crossed. I could almost see that she was clinching her pelvic region and the nipples under her t-shirt were now so stiff they were stretching the fabric of her shirt.
We continued watching until the scene, and the performers, finally climaxed. The MILF had her face close enough to the blonde's pussy that she could flick her clit with her tongue. The guy was driving into the blonde's pussy with one stroke, then into the MILF's mouth with the next. He finally had enough and pulled out and let the MILF grab his cock. She started jerking until huge ropes of cum splashed into her open mouth, up her face and across her cheek. When his cock finally stopped its spasms, the MILF crawled up to the face of the blonde and they kissed and shared the cum.
After a few short credits, the screen switched to advertisements for the porn channel and showed previews of this month's attractions. The tension in the room was thick, and I suppose that my sister knew how much I was enjoying the program. I had to admit that I was curious if the scene had made her as horny as it made me.
The absence of conversation between us was broken, when Sis said, "I've always wondered what that was like."
"What, to have a threesome?" I asked.