During her drive home Jane's body was working overdrive trying to process the 8 pills she had consumed. Each pill that was digested released a cocktail of chemicals, hormones, and genetic modifying materials designed to increase sexual potency. Each pill had the means to enlarge any man's penis by 3 inches and with 8 pills all together Jane would be looking at 24in monster and this didn't even account for the other mutations.
Because Jane had consumed 7 more pills then was recommended she would be seeing at least 7 mutations happen to her body. The first mutation would be the guaranteed mutation of breast expansion. This mutation would kick start her natural breast growth process far too early for a six year old and would instantly push her breast into a B cup in size. The second mutation would see her cute little girl butt expand and fill out the seat she was in. The third mutation would affect her breasts again increasing them to D cups. The forth mutation would lighten her brown hair to a dirty blonde. The fifth mutation would cause her tight unused pussy to swell up to into plump inviting entrance. The sixth mutation would cause the testicals that were forming under her expanding shaft to expand to almost the size of cantaloupes. The seventh and most radical mutation would cause her sweat glands to change in such away that they would start to release a heady pheromone that would cause women to become horny and crave her sex.
The drive wasn't very long and Jane's body would have just barely reached the seventh mutation when she and her mom reached their home. Her protests of discomfort during the drive had be dismissed by her mother as her just needing to use the bathroom and being bored from having to leave the park without playing longer. It wouldn't be until the car was pulling into their house's driveway that Jane's mom Penny would catch a funny smell and turn to look at her daughter. Had she not been coming to a stop with the car Penny might have ran straight into her house as she stared at the sight in the back seat. Sitting there looking back at her was Jane with her shirt ripped open from its buttons being burst off from the expanded tit flesh pushing out from the small girls chest. Her skirt was also shoved up as two huge testicals forced the girl to sit legs spread apart, and sticking out over the top of those balls was a cock unlike anything penny had ever seen. The two foot long shaft while jutting almost straight up from the small girl's crotch was bent forward under its own weight and its fist sized head seemed to point directly at Penny's face. It was uncommonly smooth without a trace of hair or veins blemishing its surface. Penny was in shock from the mere sight of the cock and when a bead of liquid formed at the tip of the cock's bulbous head Penny could feel her blood start to boil with a need to worship this monolith of sexual prowess.
Penny would have stayed starring at the cock for a while longer had Jane not snapped her out of her trance by saying that "I told you I was feeling funny". Jane under normal circumstances would have been panicking from the sight of her body changing so radically but the energy needed to cause the changes had sapped her leaving her in a sleepy and loopy state. Penny after recovering from her trance but still feeling and need in her loins, turned off the car opened the front door and then when she was sure nobody was looking she carried her changed daughter into the house. While carrying Jane the massive cock that was coming from her crotch slid between her big breasts and its head rested just below the child's small lips. On instinct Jane's tiny tongue stuck out and licked the large head and the droplet that had been on its slit. Jane then gave out and erotic moan from the pleasurable feeling of her lick and from the intoxicating taste of her precum. Penny hurried to get her daughter onto their living room couch and and almost fell when they heard the moan.
"Mama I taste so good. You should try" said Jane as she was placed onto the couch. Penny didn't answer but her brain was screaming for her to give in and get on her knees and suck that fat head for every last drop of precum she could get, but another part told her to call a doctor to see what was happening here.