Chapter 6
Marna took her brother's spent prick gently in her hands.
"Look, Mark," she said. "If you're too fucked out to do what we talked about, it's okay. We've got plenty of time for that later."
"Fucking, you mean? Hell, I'm not too fucked out. I'm just getting a good start. We can go on all night long if you want to. Just give me a couple minutes to catch my breath. This hot water feels good on my balls. I can feel another load of cum building up there already."
"You want to do it in the tub, or would you rather go to my bedroom?"
"Shit, let's fuck here in the water. That ought to be great."
"Good. That's what I was hoping you'd say. Want to play with my tits a little? That should help us both get ready," Marna said, cupping her young breasts and offering them to her brother.
Mark reached forward, almost reverently, taking one breast in each hand. He closed his fingers over them, kneading them softly.
"Mmmmm, that feels so good," Marna mumbled, her eyes closed.
"It feels good to me too. I'm getting hard again. Being with you, it doesn't take me long. You're a real turn on, Sis. I wish we'd gotten together a long time ago."
"Yeah, me too. But that's okay. We'll just make up for lost time now."
"Sure thing," Mark agreed, letting one hand fall to his sister's cunt and massaging her trembling pussy.
"Ahhhh, that's so nice," Marna hissed through clenched teeth. "But be careful. It's not going to take much to push me over the edge."
Mama could see that Mark's cock was completely hard again, as hard as he had been before his frantic come of only a few moments before. She reached out and wrapped her hand around the eight-inch rod.
Mark made no move to stop her. He spread his legs farther apart, resting his feet on the edges of the tub, giving her access to his cock.
Marna reached below the low-hanging balls and ran her fingers over his asshole, at the same time continuing to squeeze his tube of pulsating cockflesh.
Mark began to moan again, as hot as he had been earlier in their session.
"Christ, Marna, I feel like I can come again right now. Jesus, your fingers feel so nice on my ass! You make me want to shoot another hot wad right now, right away."
"Then maybe you better shove it into me. If you don't, I'm going to come without you even fingering me. I'm really hot to go!"
"Okay. Lie back in the water and put your feet up on the rim, like I'm doing right now."
Mark adjusted his position, getting to his knees in the water, while his sister leaned back against the tub and raised her feet as he had instructed. Mark looked straight into the gaping cunt. Her pussy looked ready to swallow his throbbing prick.
"Oh, Jesus, Marna, do you have a nice cunt! There's not a man in the world who wouldn't give his right nut to get into that fresh meat of yours."
"Right now I'm not interested in any man in the world. All I want is your cock right in here. Shove it in all the way and do it hard! I want to feel the fucking thing go in! Split me right in two with that big cock of yours!"
Mark moved closer, easing his body between Mama's legs, the water splashing around them in small waves, lapping against them.
Mark held his eight-inch cock, pressing its reddened tip against her yielding crack.
Marna held her breath, fearing that she would come just from having the super-hot cock-tip pushed against her. She tried to think of other things, hoping to hold off climax for as long as possible. Still, she found it impossible to think of anything else. It seemed as though she had been waiting all her life for this one moment, waiting to let her juices gush forth under the stimulation of a hard male prick.
"Go on, shove it in! Do it fast! Do it now!" she ordered, her voice ragged with lust.
Mark's hips lunged forward, burying four inches of his flaming prick in his sister's cunt.
Marna moaned with pleasure. There was no pain this time. Seth's battering cock had done its job. Mark had an open channel of seething flesh in which to sink his eager cock.
"Oh, baby! That's so nice and hot around my cock! Christ, Sis, you're one nice piece. God, I ought to rent you out to all the guys on the football team."
"To hell with that. Just fuck me! Fuck me hard!" Marna demanded. "I got to have screwing, rough screwing, and I got to have it now!"
Marna lifted her ass off the bottom of the tub, shoving upward with her crotch, forcing her brother's prick into her cunt all the way.
Their bodies slapped together, and it was Mark's turn to moan as his prick was buried all the way to the fuzz in his sister's burning hot flesh. The water lapped around them, seeping into Mama's pussy along with her brother's rigid cock, lubricating and easing the way for their frantic fucking.
As she held Mark's hard cock inside her, Marna knew that she was born to fuck. She felt as though she had no purpose in life other than to accept a male's probing cock in her cunt.
She longed to have Mark dig into her pussy even deeper, forcing his cockmeat way up into her heaving belly. What she wanted to have was a cock so long that it would shove right up through her and out her mouth.
"Fuck me, fuck meeee!" she screamed, thrashing about in the tub, splashing the water with such force that it spilled over the edge and onto the floor.
"Yeah, I'll fuck you! I'll fuck you so hard you'll feel it forever!" Mark moaned.
He fucked into Marna as though his life depended on it. He truly wanted his sister to remember this first fuck between them.
Their bodies lunged into one another, both desperate to reach crashing climax.
"Screw me, fuck meee!" Marna yelled again and again at the top of her lungs.
"Yes, by God, I'll fuck you! I'm going to cum an ocean! I'm going to drown you in cum."
They rolled and splashed in the tub, spilling more water over the side until the floor was flooded.
Marna thought her guts were on fire as the rigid cock plunged again and again deeply into her suctioning cunt. Her legs flailed the air, helpless in their wild spasming. Spittle bubbled out of her moaning mouth and ran down her flushed cheeks.
Mark buried his face in her neck and groaned deeply, shoving his cock in as far as it could possibly reach. He rotated his slim hips, pushing against his sister's inner cunt-walls and raping her from every angle.
Marna could tell that he was aching to come just as desperately as she was. From the way he was fucking she was sure that his second climax would be as wild as the first.
Mama's guts were now burning with such passion that she knew her jolting climax was only seconds away. She had fought to hold it off, to experience as much pleasure as possible, for as long as she could. Release was rolling over her, whether she was ready for it or not.
"Mark, Mark, I'm coming! I'm commming," she screamed raggedly into her brother's ear. "Fuck me! Oh, fuck mmmmmeeeeee! Kill me with your big cock!"
Her brother redoubled his efforts, shooting his eight-inch cock in and out of her cunt without regard for whether he was hurting her or not.
Marna brought her legs down over Mark's back. She beat at him with her heels, driving him on to plunge into her vulnerable cunt harder and harder.
Then there they were, together, writhing with passion and coming at the same second.
"I'm shooting! I'm fucking shooooting!" Mark yelled.
Marna could feel her brother's searing load spraying into her cunt, whitewashing her pussy until her body could not hold all the jism. It oozed around the rigid prick and was washed away in the bath water, along with her cunt-juice.