My cock had just taken a proverbial beating when Ellie'd rode me like a bucking horse in front of her sister about five minutes back, but when she told me she was going to make it her bitch, it definitely twitched when she said, 'bitch.'
Still, I felt a bit guilty for getting swindled into taking a second consecutive sky-ride with Rachel, but without Ellie. She fooled us all, but judging from Ellie's facial expressions as she watched us float away, she may not have shared the same point of view. I gave my best shoulder shrug with my arm and head out the window, hoping it communicated, "I did not mean for this to happen, nor was I a participant in the planning process and I hope to see you soon" that I meant it to. I wasn't terribly confident.
I turned my attention back inside the car as we leveled out and my eyes found my girlfriend's sister in her birthday suit, one leg swung open, the other propped up on her foot, which was resting on the seat with her. It was a sight, to be sure. My cock twitched again, stronger this time.
"Hello." Was all I could manage to say.
"What, exactly, do you think you're doing, mister?" Rachel asked as I surveyed her body up and down. It was hot, and the car was only cooled by the breeze that went through the windows. There wasn't much of a breeze, so she had a sheen across her entire body, and sweat was starting to bead up and roll down her untanned tits, her toned abs, her wide open legs, across her completely waxed pussy.
"I, umm, don't really know." I told her.
"Alright, well here's what is going to happen. I'm going to get my way. I always get my way and you know this. So does my sister." I nodded along, agreeing that all of this was true. "Now, we can do this the easy way or we can do this the hard way. I don't much mind either way, but we only have limited time on this ride, so I'm going to make you a deal." She said.
"A deal?" I asked, confused.
"Yes, Monty, a deal. You don't resist, and agree to do this the easy way and in exchange I will tell my sister you put up a BIG fight, protesting most of the time and that I just got to cop a feel while you fended me off. How's that sound?" She asked. It was a good offer. And she was right, things that my girlfriend and her sister did not want to happen were, in fact, going to happen. Why not enjoy it?
"Fine. Deal." I said.
"Well?" She asked, tapping her toe.
"What? Oh, yeah." I realized I wasn't holding up my end of the bargain. I took off my shirt, then my shorts and underwear in one motion. I was nearly hard again, and despite also being stark naked, sweat was starting to pour off me as well. I grabbed my cock and started to jerk myself to her naked body.
"Oh, hell no. You don't get all the fun again. Hands off!" She shooed my hands away with hers and dropped to her knees in front of me, taking me fully in her mouth right away. She bobbed up and down, I rested my hand on the back of her head and guided her pace. She kept at it for a little while longer, then popped her head up with an audible popping sound.
"It's probably better if you keep your hands off altogether, that way you can claim some kind of innocence in this and still be convincing. You're a terrible liar." She was mostly right, I was a pretty bad liar.
