Sisters - Sex Stories

Sisters

... with my fingers while my cock remained rock-hard inside her.

I wanted to just roll her over and fuck her from behind. My body was primed and ready to explode, but her climax had cut short the motions she was making that were pushing me toward that.

"I think you need to do Sam now," she panted, lying limply on the towel in front of me.

"I'd rather do you some more, if you know what I mean," I prompted.

"I know. But I'm not there just now," she panted.

"Yeah. Okay," I said a bit grumily, more than a little frustrated at that moment.

"Just go oil up Sam. I'm sure we can find a way to take care of this when you're done there."

"Yeah, okay," I said with a frown. Sam was lying on her stomach, looking at me as I untangled from my wife's legs and moved over to straddle her on my knees. As with My wife and Jeanie, I drizzled oil down her back and legs and then began working the oil in, my hand sliding along her skin, working from her feet up her legs toward her ass. I massaged her big, round ass and ran my hands down between her thighs, teasing oil onto her exposed pussy lips. She spread her legs as far as she could beneath me, which wasn't all that far, but it was far enough to allow me to tease my fingers up and down her wet slit, lubricating her round outer and protruding inner lips.

Not wanting to get too involved with her, especially how I was feeling at that moment, I abandoned stroking her pussy and moved farther up, my cockhead almost touching the ...

... crack of her ass as I started to slowly rub the oil into her back. I leaned toward her as I pushed my hands up her back to her neck and then rocked myself back to stroke all the way down to her ass. I felt her reach around with her right hand, the one farthest from my wife, and push my cock down between her cheeks as I rocked back farther to rub my hands down her lower back and ass.

As I rocked forward, she pushed me lower, my head dipping between her thighs, pressing against her bare pussy lips and then spreading her lips and teasing into her tunnel entrance. I almost couldn't help myself as I pushed my hands up her back, reaching for her neck, my cock pressing into her hot, wet confines only an inch or two.

"Oh fuck," Sam moaned softly as I leaned a little more over her back and sunk several more inches of my fat cock into her.

"He is good, isn't he?" my wife asked without looking over at us, her eyes closed against the sun.

"Oh yeah," Sam moaned. "So good."

"You are behaving aren't you Mark?"

"Oh yeah. I'm just rubbing her back," I answered, knowing it was a fine line between what I was doing and what Sam had aligned my body to do without my permission. I stroked Sam's back, letting my cock slide in and out of her hot, wet pussy, pushing my hips farther toward her with each stroke until I had worked as much of me into her as I could without laying on her.

I felt more than a little guilty fucking my wife's sister with her lying right there. I guess it was ...