Grace Wilkinson - All in the family

She started to wonder where Steve was when Mark turned their bodies slightly in the pool and she felt another hard cock pressing against the crack of her ass from behind. Then she felt Steve's lips kissing the back of her neck.

She felt hands – but didn't know who they belonged to – untie the sides of her bikini bottom, and then a thick finger was eased into her cunt, causing her to moan as she sucked on Mark's tongue.

"I'm first," she heard Mark telling Steve.

"Sure," Steve said, moving away.

Mark directed her to the side of the pool, where she leaned back and stretched out her arms, allowing the lower half of her body to float while Mark quickly jerked down his trunks, revealing his thick nine-inch cock. He stepped between her legs, which she quickly wrapped around him again, and placed the head of his cock against her cunt, rubbing the length of it across her clit, sending little sparks through her.

She wanted him to fuck her, wanted to feel his cock stuffing her cunt, but Mark merely grinned and untied the top portion of her bikini, allowing her tits to float freely in the water.

"Beautiful!" he said in a whisper as his hands came up to caress her tits, his fingers gently squeezing the hard nipples and causing her to arch her back.

Keri squirmed her hips, trying to capture his elusive cock, finally succeeding in trapping the head of it with the lips of her cunt. She tried to screw her body down on it, but he kept pulling his hips back slightly, all the while continuing to play with her tits, which he was now sucking on. This as driving Keri crazy!

"Fuck me, damn you!" she screamed, not caring if the neighbours could hear her or not. "If you don't shove that cock into me right now, I'll go find someone who will!"

"Yes, ma'am," Mark replied with a grin.

He placed his hands on her hips and eased the cockhead into her pussy, gently urging apart the walls of it. When he had the first three inches in, he stopped and withdrew until just the tip was in. Then he drove it all the way into her in a single thrust.

Keri moaned, arching her back and grinding her hips down against his. His cock felt so good! It wasn't as big as her dad's, and was about the same length as Chris' cock, but it was a lot thicker and spread the walls of her cunt deliciously.

"Yes, yes, yes, fuck me! Fuck me hard!" she panted as Mark began to drive his cock in and out of her.

As he leaned forward to suck one of her nipples, she wrapped her arms around his neck and pulled herself up to where she was wrapped around him completely, letting her body slide down the length of his cock, where she rubbed her clit against the hard bone of his pelvis.

Mark stepped backwards a couple of steps, placing them in slightly deeper water, giving her body more buoyancy. Then he began to drive his cock into her relentlessly. His hands were cupping the cheeks of her ass and she could feel one of his fingers inching its way towards her rear hole.

"Stick a finger in my ass!" she whispered hoarsely as she rode his cock, grinding her hips against him each time she let her body drop down.

Mark shoved a finger into her ass just as he shot his first load of hot cum into her cunt, his hands reaching to pull her down as far as she would goon him. Keri threw back her head and screamed as she felt his cum filling her pussy. Her own climax thundered through her like a freight train. Their thrashing bodies were creating waves in the pool, but all she could think about was the boiling cum that was splashing the insides of her cunt.

After a while the two of them came to a halt with their thrashing. Mark walked with her to the side of the pool and eased her off his still hard cock. He set her on the edge of the pool with her legs dangling in the water.

"You've got the tightest pussy I've ever known!" he told her with a smile. "I thought my mom's was tight, but it doesn't compare with your's."

"You say the most flattering things," she said with a laugh as he climbed out of the pool to sit next to her.

She heard another splash and turned to see Steve dive in from across the pool, swimming underwater until he surfaced between her legs. Without a word, and only a brief smile, he eased her legs apart and began to suck and lick her pussy.

This adept action caught her by surprise, but she felt her body respond to it almost instantly. Her nipples hardened once again and she could feel the flush of excitement coursing through her. But Steve didn't continue this for long, just long enough to have her get hot and horny once again, then he stopped and pulled himself out of the pool.

He took her by the hand and helped her to her feet, leading her around the pool to the patio doors, which lead into the house. She followed him without a word, her eyes glued to his big hard cock, which was bobbing up and down in front of him with each step.

He took her into the guest bedroom downstairs and the two of them quickly got onto the bed and undressed, kissing deeply as their hands roamed over each other's body. Keri felt herself getting turned on by his kisses and his touch and reached between them to grab his cock.

Steve pulled away from her and raised his body above hers, turning around to bury his face in her cunt and drive his tongue into it while lowering his hips and cock down to her face. She opened her mouth and eagerly sucked him in, feeling him slide his cock deeper and deeper into her mouth. In this position it caused her to gag just a bit, but she swallowed and relaxed her throat muscles and soon was comfortable sucking him.

Steve began to work his hips up and down, literally fucking her mouth with his big cock, while he used his tongue to sweep her cunt, drawing out her fluids and driving her wild with passion and desire.

She heard him groan and then she felt his cockhead expanding. Her own climax erupted just as Steve's cock loosed a torrent of jizz.

Her body seemed to be awash in heat as climax after climax ripped through her. She wished the moment would never end, but he pulled his organ from her mouth, rolling over to lay beside her on the bed as the last of her climax finally subsided.

"Brother," he said weakly, "I have a feeling we might have met our match. Mom's good. But our soon-to-be stepsister is even better."

Keri felt herself blush at his compliments, although she wasn't sure if she should or not. In a way, it sort of embarrassed her to be called a better cocksucker than Susan. On the other hand, the compliment made her feel good. Either way, she didn't have time to think about it, as Mark was now kissing her while fingering her pussy, rubbing her clit and making her moan.

"Better make it quick, you two," Steve said as she was reaching for Mark's hard cock. "Our parents will be getting home soon."

"Right," said Mark, quickly turning Keri over and placing her on her hands and knees. "But I couldn't live with myself if I don't fuck her ass. I've watched it for so long and I've had dreams about it."

As he knelt between her legs he slid his cock into her pussy, causing her to gasp. He then pulled out and lined his erection up with her ass.

Keri arched her back as Mark thrust his cock into her, sliding his entire length into her ass in a single thrust. His hands were holding her by her hips, jerking her backwards as he went forward with his hips.

She moaned as her body seemed to explode in a thousand little orgasms. "Fuck me! Fuck my ass!"

As Mark drove his cock into her at a frantic pace, she opened her eyes and saw that Steve's cock was starting to get hard from watching them. With a moan of pure lust she reached for it, pulling him to her and covering his cockhead with her mouth, locking her lips around it just behind the crown. On the next thrust from Mark behind her, she allowed his force to drive her head all the way down on Steve's cock.