She lets you fuck her from behind so you both can watch the girls

Lisa's hand stroked my cock as she kissed me deeply. She purred into my mouth and then broke the kiss to say, "I want this cock inside me." She grabbed a chair and positioned it facing the patio door with a good view of the pool area and the lesbian sex action happening there. She bent down, pulling her panties down, and giving me an outstanding look at her fine ass. I couldn't have been harder.

I waddled over to her as she looked back at me with a lusty blaze in her eyes, my pants still around my ankles. Her eyes flicked to my bouncing stiffness and then back up to my face. She smiled and licked her lips.

I caressed her ass cheeks, and she moaned, turning back to the display in the yard. I looked up to see that the girls were in a sixty-nine position on the lounge chair. I could see their tits pressed into the other's body and their heads bobbing in and out of their groins. I pushed my cock through Lisa's slit, grinding into her clit at the top of the stroke. Lisa groaned, "Oooo, that feels great." I kept thrusting on the outside of her sex, and she pushed her ass back into me on every round. She moaned and gasped, her body quivering with the rhythmic motion.

"Stuff that bad boy in my cunt, Lover. Fuck me!"

I didn't need to be asked twice. I shifted my angle on drawing back and pushed forward again slowly. My cock head slid easily into Lisa's pussy, so wet was she. She groaned loudly as I entered her and pressed herself back into me, forcing me all the way inside her. I held her tight to my body, luxuriating in the feeling of my shaft completely surrounded by her hot flesh.

The girls outside were both having rather noisy climaxes, and Lisa and I both watched their gyrations with pleasure. We both began rocking so my cock withdrew and plunged in again quickly. My thighs slapped audibly into her ass. I grunted as I bottomed out on each stroke, and Lisa moaned and whined sexily. She gasped every time I hit bottom.

"Oh, Lisa. You excite me so much. I love how your body feels when I'm inside you." Once I had a good beat going, I glided my hands under her camisole and body and cupped both of her modest, but sensitive, breasts. Her large nipples were engorged with blood and rigid when my palms passed over them. A shriek escaped her throat from the intense pleasure that caused. I saw the girls move to suck each other's tits, both lying on the lounger.

"Oh, Steve. You fuck me so well. You're gonna make me cum on your hard cock. I love you!" About ten more strokes and she screamed, her luscious form shaking in a wild orgasm, one of the hardest I'd ever seen from her. I responded by pounding harder and faster into her, hoping to cum with her before she ended. "Steve! Steve! Fuck, yes!" I saw the heads of the two girls pop up and look right at our hidden location. I watched them as my body exploded into a tornado of an orgasm. I pummeled Lisa's cunt as I filled her with my jism and roared my ecstasy. The teenagers just looked at us and fondled each other until we were both finished. I slumped on top of Lisa and she collapsed onto the chair back. I closed my eyes as I regained my breath.