Some sort of unspoken message had passed between them, for Mary Lou moved in to place an arm about each of our waists, her thighs moving suggestively against ours. I shifted one arm and pulled them both in to where I could kiss first one, then the other, savoring the sweetness of their soft lips and the enticing difference in the texture of their willing mouths.
"Let's… let's get undressed," Kitty managed, her face flushed with excitement. "We could have a lot more fun."
Mary Lou and I were already reaching for zippers and buttons. By the time Kitty was stepping out of her panties, we were completely naked and my prick was rearing like a frightened horse.
"Isn't that a beautiful sight?" Kitty asked, pointing at my bobbing shaft. Mary Lou nodded agreement, but her eyes were fixed on the blonde triangle between Kitty's lovely thighs. Kitty saw the direction of the girl's stare and her blush deepened, her tits lifting a little higher as her breath quickened with excitement.
"Don't mind me, girls," I grinned. "Let nature take her course. Old Uncle Steve will just sit back and watch!"
Mary Lou took her eyes off Kitty's snatch long enough to give my cock a hungry glance. "You can find a place to put that thing," she whispered.
She drew Kitty into her arms, leading her down the hallway toward the spare bedroom, with me plodding along behind their swaying buttocks, my cock bobbing with eagerness. The double session with Mary Lou had cooled me off, but a brand new fire was building in my balls as I watched the girls sink down onto the bed, Kitty spreading her legs for Mary Lou's darker thighs.
Their lips met, moving in a tongue-dancing kiss, and the dusky hips began a slow grind that rubbed the black-haired cunt against the unfurled lips of the blonde one. Their breasts pressed and rolled, nipples sliding against nipples, and their hands fluttered in knowing caresses, fanning their desire to fever pitch.
Their hips adjusted, seeking that exact position which permitted the sensitive labial lips to become caressing ridges of warm flesh, sliding through the quivering furrows as they writhed in a slow parody of intercourse.
I had seen Kitty in action with the Colfax twins. But this was a vastly different scene. There was the contrast in the two bodies, one lightly tanned, the other appearing even darker than I had originally thought, now that it was pressed against Kitty's natural blondness. Mary Lou's perfectly rounded ass moved with skillful twists between Kitty's raised knees, grinding her cunt against Kitty's until they were both whimpering with passion and my cock was slick with the almost steady oozing of seminal lubricant.
"Uncle Steve is gonna do more than watch, kiddies!" I exclaimed. "Don't move!"
I straddled Mary Lou's delectable bottom, dragging my balls across the plump cheeks, and she released Kitty's lips to turn her head and grin back at me.
"Look out, asshole!" she teased, flexing the resilient globes in welcome.
"Not this time, baby!" I answered huskily. With one hand I forced the head of my prick between her closely pressed thighs, feeling the muscles tighten about the shaft as I thrust through the warm grip, slowly and experimentally, seeking the delicious contact I knew awaited me.
Both girls gasped, for the head of my cock had fitted itself between the tightly pressed grooves of their juicy young cunts, sliding upward and forward until it jabbed at the swollen buds of their clitorises.
"Ummmmmm! That feels good!" Kitty moaned, pushing her cunt upward to increase the pressure.
"Wow!" Mary Lou gasped. "Whatever you call this, keep doin' it!" She pushed her pussy downward and the combined effect was to surround the head of my cock with warm, wet flesh that quivered and wriggled with their slightest motion.
Bracing my hands against the bed, I reared up and stared down at the base of my shaft, its thickness clamped by Mary Lou's trembling thighs.
"Okay, kids!" I whispered. "Give me a rub-off! Work those little cunts on that cock! It won't take much! Uncle Steve is almost there already!"
Neither girl was a complete novice at pussy rubbing. Kitty had done it with the twins and Mary Lou had probably racked up a long list of able partners. But this was the first time they had shared the combined thrills of tit-to-tit contact while a hard prick massaged the lips of their burning cunts.
When Mary Lou screwed her pussy down against my shaft, it was pressed more firmly into Kitty's slit. This caused Kitty's ass to reach up in happy reaction and give Mary Lou's twat the same treatment. And my prick, jerking and throbbing, was caught in the churning, bubbling middle.
While they worked their tails in a steady screwing motion, I fucked in and out of that warm clutch of Mary Lou's thighs, sliding the head of my prick through the meshed pussy lips and up to the clitoral wedge, grunting with the repeated waves of pre-orgasmic ecstasy that lanced through my balls with each thrust.
I wanted to delay the actual delivery of my boiling sperm as long as possible, for the sensation was unique. It's one thing to rub your cock through the juicy slit of a teenaged cunt and something entirely different to have it surrounded by two such greedy snatches, both of them still unpenetrated.
It was impossible to move back and forth more than a couple of inches. But that was enough. Both girls were flowing like fountains and the hot juices bathed my sliding glans, adding to the indescribable pleasure as I fucked steadily back and forth between the slippery folds.
I felt my orgasm begin far back in my belly, tightening the muscles of my pounding ass and wrenching a hoarse cry from my throat. Both Mary Lou and Kitty knew what that cry meant and they redoubled their pelvic gyrations, grinding the torrid cuntal folds about my throbbing cockhead.
Deliberately, I drew back until the tip was poised just below the vaginal openings and let the first spurt spray the flexing tissues, lubricating the passage for a full-length thrust. Then I jabbed hard and fast, flooding their pussy lips with hot sperm and massaging the quivering flesh until they were crying out in the wild ecstasy of their own climaxes.
"God!" Kitty moaned, still wiggling her ass to extract that last delightful spasm from her convulsing cunt. "That was the best ever!"
"I want to be really fucked!" Mary Lou panted. "I gotta have that big prick inside me! I just gotta!"
My cock was still hard. If ever I was going to break through that youthful cherry, now was the opportune moment. Her cunt was slick with the combined exudation of her own passion, Kitty's juices and my come.
"Roll over, baby!" I grunted, pulling my shaft from between those gorgeous thighs and rearing back in readiness. "Let's try it!"
There was a flurry of undulating curves as Mary Lou turned onto her back and Kitty scooted to one side, her eyes wide and excited as she adjusted her nakedness to watch me mount the eager girl.
"It's gonna hurt for a minute!" I warned her, settling my hips between her knees and inserting the tip of my cock between those cream-coated cunt lips.
"I don't give a damn!" she hissed. "I want to be fucked!"
"Raise your legs up higher!" I told her.
Obediently, the knees drew up and angled outward, and I lowered my chest onto those delightfully warm breasts, sliding my hands underneath her shoulders and getting a good grip.
"What can I do?" Kitty demanded.
"Reach down there and make sure it goes in right!" I answered.
She slid downward and I felt her fingers encircle my cock, insuring its aim. I provided a little pressure and Mary Lou grunted, her ass retreating as far as the bed would permit.
"Christ!" she moaned. "You're so damn big!"
"That's what makes it good, sugar," I grunted back.
I felt Kitty's other hand slip between us and Mary Lou gave a little whimper. Kitty was using her thumb on the enlarged clitoris and the girl couldn't keep from moving her ass in response. Each movement worked the fiery lips of her pussy about the tip of my cock and I began bearing down, forcing the bloated head between the straining folds.