No way!

"I'm not going to do that, Gemma! That's sick!"
"Maybe you didn't realize, but you don't actually have a choice in this. Your little robotic shemale there has illegal tech in her. You want to spend the rest of your life in a hole in the ground while scientists run tests on your genome?"
"No...but--"
"The only 'but' I want to hear is yours asking for my cock. You got most of what you wanted. A gorgeous figure and some girlcocks to fuck is a small price to pay, isn't it? You don't have a choice, so why not enjoy yourself?"
"Ah...yeah...I guess having around a bunch of chicks to fuck is good."
"Kiki, inject the maturity elixir please. She can only do one per person due to genetic mutation concerns. We need to make sure the baby can come out of you at the proper time."
Kiki cums up your butt. A tingling sensation begins soon after inside of you.
"I can feel it."
"It will grow 95% faster up to maturity. We will have to place her in a special learning chamber after birth, to keep up with her brain development as she grows to about twenty years old. Then we repeat the process. So now you have to knock me up. Change places!"
You are bodily lifted off of the cocks and placed where Gemma was sitting. Gemma digs into your cleavage to find your cock.
"Sorry, it's sort of buried between my boobs."
"Don't worry, I'll sit between them."
Gemma keeps hold of your cock as she pushes her way between your mammoth breasts. Her own tits slap your face as she works her crotch under the monsters. Then you feel your dick stuffed into a warm tight place. Kiki then inserts her dick once Gemma is in place.
"If you don't mind, I want you to cum quickly. I don't want you getting too far ahead of me."
Gemma does her best to make you blow your load. Her pussy milks you as she rides you quickly. Kiki is hanging on for dear life in the back, trying to keep her meat in its holster against the bucking bronco on your dick until you cum. Kiki injects her own up Gemma's butt as she is perfectly still.
"Yes, I can feel it! Everything is going perfectly. Soon we will have quite a crowd to play with!"