After leaving Vella's house, Olivia went straight to hers, and upon entering she discovered that there was a visitor there.
"Hello aunt, we were waiting for you." Sarah, her chocolate girl niece said when she saw her. She was sitting naked at the dining room table and her breasts were missing from her chest as she had ripped them off.
"Hello Sarah. I didn't know you were coming to visit us today, especially without your breasts." Olivia said
"I met her while shopping and invited her to dinner with us, she even gave us her breasts for us to eat for dessert." Lucia, her wife, said as she arrived putting dinner on the table.
"You know I like it when people eat me and I know you think I'm very tasty." Sarah said
"You are really delicious, but that's what worries me too. I'm afraid someone won't control themselves and eat you whole, if that happens it will be the end of you." Olivia said
"I know, but rest assured that unless you're a giant mutant, no one can eat me whole." Sarah said
"Conversation is good but we better eat soon or dinner will get cold." Lucia said
They ate, with Sarah eating only sweets and dairy that nourished her chocolate body, her breasts were restored while she fed. After dinner Olivia and Lucia ate each of the chocolate breasts that their niece had ripped from her body earlier.
Sarah didn't love watching people eat pieces of her, it just turned her on and her dick got hard, with that she jerked off.
Olivia also got a hard on, but ignored her erection until her chocolate niece came.
"You have no way, just me, to put up with mutants like you. You don't even settle down to eat." Lucia said
"And you love that, otherwise you wouldn't have married my aunt." Sarah said and then laughed
"I know. My parents say I should have married a normal man, but I like being part of a family that has mutant members." Lucia said
"Speaking of which I remembered now. You told me once that you wanted to be a mutant, didn't you, honey? I happen to get this free sample of a new aphrodisiac that turns normal people into mutants permanently. I've seen someone take one and change in front of me, it really works, so I brought it to you." Olivia said
"What? You mean I can become someone like you?" Lucia asked
"Yes, but the transformation is totally random and there's no way to know in advance how it's going to be." Olivia said
"Great. Can I take this aphrodisiac now?" Lucia asked
"I don't think so right away. From what I've seen it's better that you take it somewhere else, it's possible that you get too big and don't fit in here anymore. I also recommend that you take off your clothes as they will likely be destroyed in the process." Olivia said
"How about I take the aphrodisiac in the garage? It's spacious in there and if I get too big to stay there it's easier to go outside." Lucia said
"Great idea." Olivia said
Everyone then went to the garage, where Olivia took the car while Lucia undressed.
"I'm very excited about this Aunt Lucia. Just the thought that you're going to be a mutant like us makes me excited, I'm so excited to see what you become." Sarah said
"Me too. Well, now that the preparations are done I'm going to take the aphrodisiac." Lucia said and then put the pill in her mouth and swallowed it. The change started quickly with her breasts growing bigger and bigger before they merged and became a ballsack, her nipples disappeared and it went all the way down to rest between her legs. Her leg joints became more arched as her foot elongated, making the heel a new joint of the legs while, at the front, the toes merged so that only three remained, which elongated and the nails became claws. A long reptilian tail grew out behind her, only without scales but normal human skin. Her torso thickened along with her neck, from which the skin loosened and rose to fully cover her head. Soon her original upper body was a cylinder of flesh with arms, which she used to pull the skin from her neck that had covered her head. Her hair had completely come loose and fallen all over the floor, and it was revealed that her head had become the pink tip of a dick, but she still had her eyes and mouth, which now stood vertically and also functioned as an urethra.
"Cool aunt, you've become a cocksaur. It would be more insane if you had gotten bigger." Sarah commented on Lucia's transformation.
The transformation was not complete and Lucia's entire body began to grow. "You spoke too soon." she said and kept growing, eventually having to go out of the garage, until when she stopped. She had become some kind of a Cocksaur Rex. She ended up a 25-foot cock with arms, balls the size of a small car, a dinosaur's legs and tail. Although part of her body had a reptilian appearance, it was completely covered by human skin. Her vagina and asshole had merged into a sort of cloaca that was behind her ballsack.
"Wow honey, you've completely changed. If I hadn't seen it I don't think I would have known that this mutant is you when I saw you." Olivia said
"Totally incredible, you are a real sex monster now. Who knew you'd become a cross between a dinosaur and a dick." Sarah said
"A dinodick? I liked the word, perfect to describe me now. This body, I feel so good, I'm loving it. Ohhhh I'm so horny.... I need... this... this feels really good." Lucia said and started to stroke herself.
"Honey, I know you're having fun, but I'm horny too. I'm dying to fuck you in your new form." Olivia said
"Come on, I'm all yours." Lucia said, bending forward so her tip approached the floor and lifting her tail to present her cloaca.
Olivia climbed on her wife's balls and thus managed to perfectly guide her cock to the cocksaur's cloaca, and pushed everything inside easily. She was only disappointed because the opening was so much bigger than her wife's old pussy and still had plenty of room in there.
"Oh honey, I'm so sorry. It feels like I've grown a lot and your dick is now too small for me, I need more." Lucia said
"Maybe I can help. Can I join you aunts?" Sarah said and, getting a positive response, also climbed her newly turned aunt's balls, shoving her hard cock in her cloac along with her blue fox girl aunt.
To Lucia the second penetration was all she needed, with two cocks filling her cloaca she increased the rhythm with which she stroked herself. She could feel the cum in her balls starting to build up inside her. She tried to resist so that it would last longer, but when Olivia and Sarah came, feeling her wife and niece's cum invade, any resistance was gone and she came too, several cumshots with gallons of cum in each shot through her mouth/urethra, flowing across the lawn to the street, where he followed the guide until he fell into the gutter.
"That was wonderful, I've never felt so satisfied before." Lucia said
"You were just great dear." Olivia, who was now in front of her wife, said holding Lucia's tip and then they kissed.