She's sleeping

Despite all the noise from their fucking, Mike's sister, Marissa, was still sleeping soundly when Mike and his mother sneaked into her room. She liked to sleep naked, so it was just a matter of taking her covers away to reveal her relatively large breasts. The two of them looked at each other and made a plan.

Marissa was still sleeping when her brother slammed his dick into her pussy and began to fuck her hard, waking her up with a yelp. However, she didn't get a chance to do much, as found her mother on top of her. She lowered her pussy so it was on top of her face, and rubbed it on her. She tried to scream, but it was muffled by her mother, and there was no one else in the house who might listen to her... Except their new maid! She tried to scream for her to come help, but couldn't managed.

Between the two of them there wasn't much she could do as she got fucked. She cried as Mike fucked fast and hard, and came inside of her, infecting her with the parasite. It quickly took over her, and she began to actively pleasure her mother with her tongue, thought when she got the time, she talked to Mike.

"Come on, big boy. Stick it right back in!", she told him a sexy voice, and Mike obliged. Soon, the three of them were engaged in an **** orgy. At the same time, the parasites began to alter their bodies. Mike's dick became somewhat larger, while his mother and sister got larger breasts and asses.

The orgy lasted for a while until they all came. Despite this, they were still full of energy, and wanted to fuck and infect someone else.