Brenda left the Sex Shop satisfied with the transformative aphrodisiac she bought. As the lower half of her body was now a giant copy of her entire body and there was a cock the size of her boyfriend between her legs she was forced to be naked. She was now just like the mutants that had been around the city and that's why no one thought it was strange to see her walking around the city naked with her new body, as no one knew that she had just changed, even so she was a little embarrassed.
She couldn't wait to show the news to Hector, her boyfriend, and went straight to meet him. Brenda knew he was playing basketball with his friends and that he would be leaving soon, so she walked over and waited for him outside.
When Hector left the gym he noticed that there was a giant dickgirl near the entrance, but as a nude mutant in town it wasn't strange he didn't even bother to look at her closely, he just walked right by.
"Hey honey, where are you going? I said I was going to give you a big surprise, what did you think of my new me?"Brenda said
Hector stopped and, recognizing Brenda's voice, he looked at the mutant and was totally surprised to finally notice that it was the top half of his girlfriend that was where the giant dickgirl's head should be. "Brenda? But... what happened to you? You look like one of those mutants." he said
"That's why I became one of them. What do you think? Did you like it?" Brenda said, turning all the way around so Hector could see all of her.
"I... I honestly don't know what to say. I personally have nothing against mutants, but I also never imagined myself in a relationship with one. But how could you have become a mutant? As far as I know, it is only possible to be one if you are born a mutant, and not undergo some kind of transformation at some point in your life." Hector said
"I tried a new aphrodisiac remedy while looking for something to surprise you and this happened to me. According to the creators of the aphrodisiac, the transforming effects are random and the new form taken is permanent until the aphrodisiac is taken again. I bought some, if you want you can also try." Brenda said
"Maybe I will, but not here in front of everyone." Hector said
"But where can it be? I don't think I can enter my house at my current size and I don't believe I can enter yours." Brenda said
"How about at my cousin's house? She's married to a rich man and lives in a mansion with really huge rooms, I know that because I've been there once. She said I could use her mansion whenever I wanted however I intended never to ask, but I think that's our only option right now." Hector said
"So come on, you have no idea what you're missing out on being normal." Brenda said
Hector was accompanied by his girlfriend to the mansion where his cousin lived. Liz welcomed them and, after the initial surprise at seeing Brenda, happily guided them to a room they could use, but gave the condition that they should give her one of those transformative aphrodisiacs.
When they arrived in the room Brenda took a pill from her purse and gave it to Liz before she left the room leaving her alone with her boyfriend, only they didn't know that Hector's own cousin had had hidden cameras placed in several rooms around the house, and what they were in was no exception.
"So how does this work?" Hector asked Brenda
Brenda took the vial with some pills out of her bag and said "Just take one of these and you get very horny and transform. I'll show you, watch as my body changes again." She then took a pill and quickly could feel its effects. Just as she remembered she was so horny her dick went rock hard almost immediately. Soon her body started to change, just like the first time the top half of her original body didn't change, just her giant body changed.
Brenda's breasts tripled in size and her nipples multiplied, leaving her with 4 in each breast, she groped them to feel them at their new size, which made milk come out and trickle down her nipples. Afterwards she felt like she was going to shit, but what pushed her way out of her was too big. Signaling that there was something there, Hector stood between her legs, right behind her mono-testicle ballsacks, where he saw her asshole open hugely and a pair of feet come out of there. More kept finding its way out and soon the feet were followed by a pair of legs, thighs, and even a new hip came out. After the new hip left her asshole practically turned inside out, having that ass fully sealed as the new pair of legs took off and completed her transformation into a humantaur. Finally her cock split in two and they both moved with the mono-testicular ballsacks to between her hind legs, then a second testicle grew in each of her ballsacks. At the end Brenda's lower half was a giant humantaura with 4 nipples on each breast constantly filled with milk, her pussy continued between her front legs while on the back she was a shemale with a pair of dicks, each with your own pair of balls 2 feet in diameter each.
"Oh dear, this feeling feels so good. Now it's your turn, I'm curious how you're going to transform." Brenda said, precum dripping off her hard cocks at her anticipation.
"Alright, I'll try. I just hope it's not something grotesque." Hector said and took the pill.
Hector was horny almost immediately and felt his cock hard as he had never felt it before. His girlfriend had forgotten to tell him to take off his clothes before, but he did when she noticed his erection was different and the space inside his pants was a lot fuller. Pulling down his pants he realized that he now had two dicks and ballsacks, and that both were not only bigger than before, but were still growing. When his cocks reached a foot long they both broke free of his body and fell apart to the floor, leaving a pussy in place between his legs. "Hey, what's the use of my dicks growing if they leave my body?" he said, only to feel a pair of breasts grow on his chest, but with his nipples disappearing completely.
Hector felt his new nippleless breasts, both having grown into I-cups. He watched his body, which had completely become that of a woman, looking to see if there wasn't something a little stranger. Then he looked at his dicks lying on the floor, seeing that they both continued to grow and, surprisingly, a woman's perfect lower half grew at the base of the dicks, even with a well-formed pussy. Soon her cocks had grown to 5 feet in length and did not move until Hector realized that, even though they were separated from her body, they had no will or personality of their own and that she was able to feel what they felt and also control their movements.
"Hmmm...look how sexy you look as a girl. It's just too bad you didn't get big enough for me to fuck you." Brenda said
"But I can do it with you." Hector said and guided one of her cockgirls between her girlfriend's front legs, rubbing his tip on the edges of her pussy. and Brenda then bent down allowing penetration.
Brenda enjoyed the experience and with all the horny and stimulation, she bent down to the point where she had all 4 of her knees on the floor. This served as a cue for her 'boyfriend' to guide her other cockgirl to her ass and up her asshole.
Hector then used one of her girlfriend's hard cocks as a step to climb on her, climbing her chest until he could sit on her giant shoulder so the two could kiss.
The couple hugged each other as they went on to satisfy their carnal desires, until Brenda came.
Hector didn't stop even while her girlfriend came, and soon he felt that she was also approaching her own orgasm, finding the sensation of something rising in her throat strange. When she finally came she could feel her cum entering Brenda's pussy and asshole, but they were both caught off guard by the white material that shot out of her mouth, going directly into the giant humantaur's face. Soon she recognized that she was practically vomiting a great deal of cum.
With the orgasms over, Brenda and Hector faced each other with a smile on their faces. The humantaur, her face all white, said "I was really taken aback by this. Your dicks being able to be moved separately from your body is surprising enough, but even though you looks like a normal girl your main body is also a dick."
"This one was really unexpected and surprisingly very good." Hector said
The couple were still very excited and they immediately left for the second round without suspecting that Liz was seeing everything.