my stepsister is so hot

Even you?" she asks, looking over her shoulder.

"I'm a guy, aren't I?" I laugh as I move over to Kristina, my cock still hard inside my shorts.

What Kristina lacks in tits she more than makes up for with her ass. I'm surprised I never noticed it before. Curvaceous doesn't even begin to describe it. I squeeze her delectable cheeks as I tell her what I think. "You have one sexy ass, Kristina," I whisper in her ear as my hands explore every inch of her heart-shaped mounds. "How can these round cheeks be so firm and so soft at the same time? It makes me want to bury my face in them and just nibble away." It's true. I have trouble tearing my hands away from her.

"Ahh, Kylie," I take a deep breath as I move down the line. "You have an ass made for spanking," I say, giving her cheeks a playful smack.

"Mmm," she moans seductively. I think I may have found a pleasure point. Round and firm, her cheeks swell just enough that they almost invite you to spank them.

"Guys will look at your ass and fantasize their red handprint embossed on your cheeks." I tell her as I teasingly slap her firm globes. "Have you ever had an erotic spanking?" I ask. She shakes her head. "When you do, you'll know what I mean." I pinch the inside curve of her ass cheek and move on to my sister.

Hesitant about touching my Lauren after what happened with her tits, I give her ass a cursory caress and tell her she has the perfect size, shape and firmness to make guys follow her anywhere just to look at it.

"No nibbling, spanking or doggie style comments for me?" she teases. "Just looking at it?" The truth is her ass invokes erotic images of an energetic anal fuck but I'm not going to tell her that.

"Disappointed?" I ask, kneeling behind her as I place one hand on each of her luscious cheeks. With my fingers extended and my thumbs between her legs, I gently massage her fleshy ass while letting my thumbs brush lightly against the thin material covering her pussy. "You have an ass made for squeezing, Lauren," I add before she has a chance to answer.

Fuck! Maybe it's my imagination but her thong feels moist. Well, why not? I've been hard as a rock since we started this little game. There is no reason to believe that these girls are any less affected. But my sister?

"You all have great looking asses," I announce as I walk back down the line, caressing each one as I pass. "But there can only be one winner and I choose this one!" I finish by grabbing Alex's ass cheeks and digging my fingers into her dark flesh. "Alex you have the sexiest ass!"

"Yay!" she screams, jumping up and down as she turns around. "Thank you, Brandon!" To show her appreciation, I am rewarded with the erotic sight of her dark brown tits bouncing enticingly in my direction. Throwing her arms around my neck, she kisses me hard on the lips, mashing those impressive breasts into my bare chest. Fuck!

"What's next?" Kylie asks with a sly smile, "legs or pussies?"

"Legs," I answer while peeling Alex's arms from around my neck. It's not because I wasn't enjoying the kiss or the feel of her taut nipples pushing into my chest, it was the glaring looks I was getting from Lauren that made me move the festivities forward.

"For this one, I'll be not only looking at the tone and shape of your legs but feeling the smoothness. You'll lose points for any residual stubble," I say with a smile.