Max tries her own experiment

Alec’s heart jumped into his throat as he looked at Max’s firm round ass and thin tight pussy peaking between her thighs.

“I need you to fuck me Alec, you’re X5, your sperm may have the enzymes needed to neutralize the toxin.”
Alec stood frozen gawking at Max’s nakedness.
“This is a one time offer,” Max said spreading her legs slightly so that the fleshy folds of her pussy opened like a rose.

Alec quickly undid his belt, unzipped his pants and yanked out his cock that was already hard at the mere sight of Max as she was presented. Max looked down raising an eyebrow impressed and a little unnerved by Alec’s size; he looked to be 9” at least, her stomach fluttered and she felt a twinge in her vagina.

Alec got behind her grabbed her waist and pressed his circumcised head against her the entrance of her slit then pushed forward. Max mouth opened wide in a breathy whine as his head pushed into her, her cunt stiffening and fighting his cock as it slid in. She grit her teeth, breathing through her nose as he stretched her open and filled her out pushing two inches inside her pussy. Alec shut his eyes as he eased into her, she was so tight, he slid out and rammed into her forcing half his thick dick in. Max doubled over the counter toppling her mug of coffee that shattered on the floor but held herself up, she felt Alec pull out again and this time lift her up on the tips of her toes as he shoved his entire cock inside her filling her completely...

Alec pulled her robe off her shoulder biting her shoulder lightly to muffle a moan, her right tit popping out. Max stood there with his long thick cock filling her cunt out, her senses once again peeked. She could feel the light throbs of his dick inside of her; she could hear the soft hissing of the water on the stove, and the soft breathing of Cindy as she slept in the room. Her pussy was slowly moistening and it felt more comfortable having Alec’s dick deep in her body. He felt it too because he slid out of her slowly then eased in, doing it over and over, working his dick further and further out. Soon her was thrusting quite easily in and out of her, grunting and panting with every movement.

Max’s body was rocked against the broken counter top as Alec thrust in and out of her silky, wet cunt, she started bucking her hips and meeting him halfway, clenching her ass when he pumped into her squeezing him inside herself. Alec bit harder on Max’s shoulder to stifle a loud grunt as her pussy gripped and convulsed around his pulsing dick. How long had he hoped, dreamed of having her? Working with her looking into those soulful eyes, lusting over those full lips, desiring her genetically engineered perfect body- and here he was fucking her at last, completely overcome by how hot and wet and warm her pussy was clasped around his cock. He reached up and groped then squeezed and molested her plump round tit tweaking her hard nipple.

Max bit her lip swallowing as Alec caused her body to respond sensually to his touch; she clamped her legs together pinching her sticky cunt around his hard dick even tighter still. Alec responded by heaving his cock in her hard almost lifting her off her feet. He started ramming his cock in and out of Max’s sopping sex every thrust pushing her on her toes, when he reached down and rubbed her clit Max had to bite down on her knuckles hard to stop herself screaming out.

She spread her legs giving Alec the perfect angle to slide his generous cock in and out of her and this he did most eagerly, pushing as deep in her as he could before pulling almost all the way out and slamming in again. Max knew Alec was using his transgenic stamina to fuck her, bending her over her own kitchen counter and driving in and out of her quivering cunt at a unrelenting pace. She was going to cum- Alec, the pretty boy who annoyed her to no end was giving her the hardest fuck of her life and she loved it.

She held his waist to stop him slapping into her and pulled forward his dick slurping out of her till his knob plopped out from between her pussy-lips. Alec gave her a bemused look before she spun around, gripped his cock and guided it between her splayed legs. Max looked him in the eye as he pushed back into her in one thrust. He pulled out and sloshed back in her wetness coating the soft folds of her petal like lips. The way she was leaning against the counter made her robe fall open and expose her supple breasts, and Alec watched them bounce as he rocked her with every thrust. His eyes travelled down to her pierced navel then to the thin strip of dark pubic hair above her clit to finally rest on her soft tight pussy bulged around his cock as it slid in and out of her perfect hole.

He went down and caught her nipple between his lips and sucked on it before he lapped and sucked on her soft breast. “Ohmigod,” Max was unable to muffle the whine as Alec fucked her a lot slower than before, now just leisurely easing his dick in and out of her. The tingling in her vagina started spreading throughout her body and she pulled Alec against her tightly, “faster,” she panted in a husky voice filled with need.

Alec looked her in those soft doe eyes that were half-lidded, her body gleaming with sweat. He started pumping faster and faster making her body squirm as he rocked her, watching her eyes fluttering uncontrollably. Holding her he gave her exactly what she wanted pulling her slender frame down on his cock and fucking her as hard and as fast as he could. Her thighs clenched around him as he drove his aching cock in and out of her lush pussy over and over. He felt her body starting to shudder underneath him and screwed her through it.

Max pushed her fingers under Alec’s top rippling them over his washboard abs keeping her eyes tightly shut as her orgasm started. It was a sheering, electrifying spark that shot her into spasms, her pussy sealing around Alec’s cock. She wanted to scream but Alec had shoved his hand over her mouth to stop her. He grunted as Max’s pussy clenched even more tightly around his dick. He froze, twitched inside her then came erupting deep inside her.

Max was barely aware of the hot sperm that was coursing through her so intense was this third orgasm she had tonight. Her body still shuddering violently. Panting in ragged breaths she opened her eyes as her climax reeled and subsided. Alec was still over her, his slackening cock still inside her. He withdrew it, a mixture of their mingled cum spilling from her wet cunt...