Venturing outside

After some discussion, both Jill and Mark decided to head outside and and walk around town. Jill had decided to forgo clothes, save a pair of shoes, to see how the public indecency change worked, while Mark stayed dressed in his sweatpants and T-shirt. Jill's cock stirred slightly at the cool evening air, and she felt the same cool air on her pussy, which was wet as could be.

They walked towards the park, which was about 10 minutes away on foot. As they walked, they saw that they weren't being stopped, which meant that the public indecency change was working, but people were staring. Eventually they realised that this might be because of their...enhanced biology, especially Jill with her huge girlcock and balls sitting neatly above her pussy, and her bombshell body.

The two big dicked siblings made their way to the park and sat at a bench by the fountain. The park itself was well kept, it seemed that the city had the money to spend on it looking nice. Jill say with her legs spread, showing off her labia to any interested passer by, her balls resting gently above and her cock bouncing slightly with each such movement. The passers by also looked at them the same way others had, with a mix of awe and envy. They sat together in silence for a while, both now acutley aware of of the power they now had.

After about 15 minutes, Mark turned turned to Jill, a mischievous look in his eye.

"Wanna fuck?" he asked, his cock rising in his sweatpants.

Jill didn't even bother replying, simply standing up and bending over, exposing both of her holes to Mark, the motion saying 'take whichever you want'. Mark rose from his seated position and pulled down his sweatpants, exposing his cock to the cool air and the public. He lined himself up with Jill's slick entrance and grabbed her arms to give himself some leverage, then thrust into her tight snatch.

"Mhhm", "Uhmph" and other similar sounds escaped from Jill's mouth as Mark thrust into her pussy. He had started off slow and hadn't went very deep, but with each thrust he pushed more and more of his 15 inch cock into her, and by now he had buried himself completely inside her, her insides stretching to accommodate him, which was an odd but intensely satisfying feeling.

Mark watched as his plowed his sister, her tits bouncing and wobbling with each thrust, and the ripples from the impact propagating across her plush ass. Mark had been focused on Jill, but when he looked up, he noticed a small crowd of about 8 or 9 people had formed. Mark assumed that it had been Jill that willed the crowd to form, but he wasn't going to complain. In the crowd he saw a woman, about mid 20's whose eyes were wide. Mark surmised that she was probably very into what she was seeing, and his curiosity piqued, he looked at her and thought "I wonder what turns you on".

The sensation was surreal to say the least. In Mark's mind he saw the woman with a large 78% next to her, which he guessed was her arousal level, and the words entered his mind; "Submission, latex, being dominated, facials, big dicks", which must have been this womans fetishes and kinks, Mark took a good look at her, committing her to memory, figuring that he could use Master PC to find her later.

"Ahhh. AHHnnn. AAAAUUUGHHH!" The groans emerging from Jill has gotten louder and louder over the past minute, and soon Mark felt her pussy clench tightly around his cock, and her body shudder as she came. This also seemed to trigger her cock to cum, and thick spurts of cum left her cock, splattering against the ground. This sight pushed Mark over the edge, and he was soon filling his sister with his thick cum, pumping rope after rope into her. After about 20 seconds, they had both stopped cumming, and Mark pulled out of Jill, his cock still hard. He stuffed his engorged cock back into his sweatpants, while Jill stood up straight, and slid her finger up the underside of her cock, and collected a small strand of cum that had run down it, and put her finger in her mouth. Her face soon turned into a grimace however, as she found that she didn't like the taste of her own cum. That was definitely something they would need to change.

The crowd that had so quickly formed around them had just as quickly dispersed, leaving the two borderline gods of reality standing by themselves in the park. The two perverts decided to make their way home, Mark's cum slowly dripping out of Jill's pussy as they walked.