You see, the thing is, I am something of a masochist. I like pain. Now, I'm not into the hardcore stuff like taking jumper cables to the sack or being...stomped on by stiletto heels. I just like the light stuff, maybe some smacking around, hair pulling, and some of that. I might even be able to be talked into being whipped. I won't be tied though. The desperate urge to be able to defend myself should (God forbid) halfway through my bondage session, my mistress decides she didn't like the fact. She turned around and slowly slid her pussy across his impressive chest up to his mouth and into the 69 position. She strained to continue sucking as he grinded his tongue on her ridiculously sensitive clit. She moved her head round, looked at him and said, "I want your cum. I want it in my mouth. I fucking want your cum" He slowly said an eye brow and replied, "Believe me, you'll come before I do". Without another word the pair began to lick and suck furiously. They became a pile of olive skin. . and get off while she did.It had been a total accident. But, after freaking out and working out exactly what I’d changed, I saw the perks and decided to run with it.It was not a hard decision.And so, for the last two weeks, I’d been masturbating in the bathroom. Every day at 8am, I’d go in and jerk off, leaving the door open—just enough for her to see what I was doing. And every morning as I came, I’d hear the muffled groans through the door of my sister getting off as well.It. Was.. Now you were in full dom mode - calm, sure, methodical, and utterly uninterested in my opinion on how the night should go. Suddenly you were behind me - you ran your hand down my ass over my skirt, continuing right down the back of my bare leg all the way to my ankle. You locked a cuff on to it and then slapped the inside of my other thigh; I quickly spread my legs as far as I could, causing the rope to pull tight on my arms. You clamped my other ankle in the spreader bar and I could feel you.