Matt's older sister Ashley suddenly knocked on the door. "I can hear you moaning." She said. Matt sighed and than came up with an idea. His older sister would be unable to control herself if she smelled his semen and want to fuck him desperately. Her body would get hot and she would feel weakened and intoxicated by his smell. He then thought about how he wasn't really attracted to her. So he came up with a thought. He didn't want to make his sister better so he would make her fake but good looking for fetishists. She would always wear too much make-up outside the house but wouldn't care to apply it while at home. She would have an obsession with her huge head-sized fake breasts which she wanted to make bigger and that often lactated due to the pressure of her implants on her mammary glands. She would also have a natural doll face so he wouldn't have to stare at his sisters old face. Of course this face she would normally ruin with make-up when prowling for a boyfriend or one night stand. She would have a height complex due to being on the short side. She believes her friends haven't realized her breasts are fake but they do.
Matt opened the door and there stood his sister, a fake sex lusting beast awaiting his punishment. She stumbled inside and slammed the door shut. He locked it for her. She was wearing a tight top over her breasts. It was something simply that she'd only wear in-house. "Do me." She uttered. He threw his stepsister on the bed and concentrated for getting another erection She removed her top and lowered her bottom staring lustfully at his oversized manhood. He let his manhood rest on the bed and grabbed her right breast. She moaned quite loudly. Her breast felt quite stiff and firm but was obviously not natural. While laying down they had kept their shape almost entirely jolting out of her torso. Her areola had been stretched out but her nipples were small. He played with them and she moaned softly. He realized she didn't have much feeling left in them knowing that breast enhancement can cause that. He concentrated to make them very sensitive instead. He touched them again and she trembled pushing her chest outward and causing them to jiggle while once again letting out a loud moan. She pushed her right breast up and tried to lick it but they were far too firm. Streams of milk started running from her nipples and she started breathing more heavily. "No more... I want it... so badly."
He lifted his penis and put it at the opening of Ashleys vagina. He concentrated again and thought. ''I can penetrate Ashley but will ruin her for anything other than very hung guys. " To his surprise his penis started slimming down a little in girth, proportionately it didn't look amazingly thick but on a penis of normal length it would have definitely been very thick. He pushed it in. Ashley leaned back and started rubbing her chest more. She was leaking even more milk than before. "Oooh, oooh!" She snapped back her head. Her massive chest bouncing unnaturally up and down. She lifted her milk soaked left breast before snapping her head back again. "Uh....oooooh...oh!" He was about 8 inches in her before he felt he couldn't go deeper. He started moving his hips. Ashley could no longer sit up and put her head on the bed with her mouth wide open. Her breasts slid back and forth over her ribs. Her unnaturally firm perky breasts even squirted. Her nipples were so perky on her breasts that they squirted toward her face as she lied on the bed into her open mouth. She swallowed her own milk absent-mindedly. She had at least climaxed 10 times now
Matt finally came. He didn't even bother to pull out as he could just will her not pregnant if he concentrated after all.