I gave her another shove and waited until her body relaxed. I estimated about six inches of penetration, enough to start the really interesting part. Keeping my chest plastered against her back, I began raising my hips, dragging the throbbing head of my prick back through the convulsing tissues, frictioning their tender surface into a constant undulation.
Mary Lou moaned, but the direction of my movement encouraged the powerful muscles to relax their torrid grip. By the time the rim of my glans reached her sphincter it had loosened to a comfortable squeezing. I didn't give her time to tighten up again. Before she could react to the move, I levered my hips downward and shoved nine inches of hard prick into her intestinal sleeve. My belly slammed down against the upper slope of her buttocks and the small of her back. My balls slapped wetly into the juicy crack of her virginal pussy. Mary Lou Compton, age seventeen, had exactly what she had asked, for a bellyful of cock!
She held her breath until she was certain there was no more of it. Then, as she exhaled in a slow, noisy whimper, the binding pressure eased to a delightful tightness that seemed to nibble at my prick with a hundred pairs of greedy lips. She was ready.
She took the first few strokes with renewed tension, making it difficult to bore through those clamping walls. But the juice she had spread on my cock and the natural oil of her intestine lubricated the passage and my prick slid in and out with a delicious sensation which drew my balls into pulsating tautness.
I didn't have to tell her what to do. Once she had accepted the massive invader, she began working those muscles in a way that increased my pleasure and created a new delight for her, relaxing them as I entered, then squeezing again and again as I withdrew for another stroke.
"Oh God!" she gasped each time my prick slid into that churning inferno. Then, "Uh! Uh! Uh!" as it pulled back. Each stroke pushed her hips down into the yielding bed and she pushed it upward, working it in a frantic circling, as I lifted my hips for another shove.
"Oh, Steve!" she whimpered, when I broke the rhythm to give her a few moments in which to exercise her newly acquired skills. "It's good! Goddamn! It's good!"
She worked her ass up and down and wiggled it from side to side, insuring that her intestinal walls were massaged from every possible angle. It was hot in there, hotter than most cunts, and a hell of a lot tighter.
"Damn right, it's good!" I gasped the words, for the way she was using that superheated tail was dragging me closer and closer to the limit of my willpower. "Think you can come like this?"
"Yes! God, yes! I can feel it in my pussy! When you slide in real deep it feels like it's in both places!"
"Want me to work on that clit?"
Her head rolled. "I don't need it! Just fuck me! Any way you want to, Steve! Just fuck me!"
I forced my arms beneath her, one under her belly and the other across the tight globes of her young tits. "I'm not gonna stop this time!" I warned. She gave me a little grunt of understanding.
Carefully, I slipped my feet under her widespread ankles, giving her something to use as leverage for the last savage mile of our race. She used it, pushing that delightful ass up and gobbling another two inches of my cock. It was my signal.
With a grunt accompanying every stroke, I fucked her as hard and as fast as I could pump my cock in and out of that tight slippery ass, plunging through the juicy grip until the head was lodged in the hot pulsating curve of her intestine and her hips were writhing in a combination of protest and pleasure.
Now and then, I drew back until she cried out in fear of losing the piston that was stretching and reaming her with its furious thrusts. But, mostly, I kept it deep, screwing with short jabs that rammed my pelvic bone into the yielding pads of her ass and kept my balls flopping against the juicy lips of her cunt.
Faster and faster, the waterbed increasing the friction by jiggling her hips, I fucked the whimpering girl until the dam broke and my semen lanced into her tail, the release making me cry out with the sheer pleasure of it. I drove full length into the convulsing sheath and let her draw the come from me with her vigorous writhing and the undulating milking of those hot muscles. When the last shudder had rippled through my entrenched prick, I collapsed atop the quivering body with a muffled groan.
"Mary Lou Compton," I panted, "you have un commonly good ass!"
She squeezed my cock, giggling happily. "Want some more?"
"You're damn right!" I said. And proved it.
CHAPTER SEVEN
Mary Lou proved her ability in other departments by preparing a delicious lunch and, as we ate, she told me about the couple with whom she stayed.
"He owns damn near everything in the county," she explained. "So he thinks we have to be a little better than anyone else. No dates, no cigarettes. He'd have a fit if he ever saw me take a drink. Clara, his wife, is fed up with him, but she's too weak to fight. He won't let me see Lena except on Christmas. Then he insists on sticking right under our noses so we can't talk."
I was about to answer when the phone rang and she gave a little start.
"Relax," I grinned. "You're safe here. As long as you don't mind being screwed half to death."
"Who gave up first?" she grinned. "Wait till you get through this damn cherry! We'll see who screws who!"
I picked up the phone and heard Glenda's husky drawl.
"We're on the way back," she explained. "I slipped off to make this call. Why the hell haven't you called me? From the looks of this niece, you've been too busy to get out of bed!"
"Patience, baby," I soothed. "We'll make up for it when this week's over."
"You didn't answer my question!" she insisted.
"You didn't ask it," I reminded her, creating a momentary silence.
"Alright, Goddamn it! Are you screwing her?"
"No," I answered truthfully. "As far as I know, she's still a virgin. Does that make you happy?"
She paused again. "I don't think I'd blame you," she said in a curious tone. "She's one of the sexiest things I've ever seen."
"Hey!" I chuckled into the phone. "I didn't know you swung both ways."
"Neither did I," she said, not sharing my humor. "Maybe I'd change my mind at the last minute. But, today, watching her wiggle that little ass, I got hotter than hell!"
An idea shaped itself in the back of my head. "What do you say we all get together sometime this weekend?"
"You mean… let her know about us?" Glenda queried.
"Why not?" I countered. "She'll keep our secret. I do know her that well."
She agreed to find an excuse to get away Saturday night and reminded me that, regardless of anything else, she had to be laid. I assured her that we would find some way to accomplish that delightful task, blew her a noisy kiss and rang off.
Mary Lou was grinning at me with knowing eyes. "I'll bet you screw everything that gets within reach," she laughed.
I didn't bother denying it as I headed for my typewriter, managing two pages before I heard Kitty's arrival. By the time I joined them, prepared to make explanations and introductions, they were already chatting like old friends.
My cock sprang to immediate attention as I stood there drinking in the youthful curves and exciting beauty of my two welcome guests. Kitty helped the shaft to a throbbing and complete erection by shoving her breasts against my chest and rubbing her belly across the bulge in my trousers, presenting a pair of warm moist lips which I covered with open mouth, sucking her tongue in to where I could nibble its tasty bulk.
"That sure ain't no uncle-type kiss!" Mary Lou giggled, watching my hands explore the delicious area where Kitty's skin tight blue-jeans strained to cover the taut globes of her little rear.
"This ain't no regular-type uncle!" Kitty gasped, leaning back and locking her hands behind my neck. "He understands the needs of a growing girl."