Alice and Louise were shocked to learn that they were on an island that had no signs of anyone else living there, making them shipwrecked. They also questioned why Teri was naked and she lied saying she was taking a shower when she ended up on the island.
"Sorry if I'm being inappropriate, but I can tell your dick is hard and I'm turned on too. Would you like to fuck me?" Teri said to Alice
"I would love to, but I don't know if Louise would like it?" Alice said
"Don't say bullshit. We're just friends, you can have sex with whatever you want and I won't be mad." Louise said
"Okay, if you don't mind then I'll do it." Alice said
"I'm waiting." Teri said introducing her equine pussy to the futa centauress. Alice straddled her and began to fuck her, who looked at Louise and silently wished the other centauress had a cock too, causing the new member to grow hard beneath her caramel horse body.
"Oh Teri, it feels so good to feel my cock inside you. The only problem is Louise's gaze, she's clearly jealous and wants me too." Alice said
"If she wants you she can join us, at least that's better than standing around just looking at us with her hard-on." Teri said
"I don't have any erections, I don't even have a dick. Or do I have?" Louise said, but starting to doubt it when she felt something strange underneath her and she looked "I can't believe I grew a dick too."
"You don't have to worry about that, it's just good mail. I don't believe me rethinking the possibility of getting back to normal. It's not so bad if I never go back to being a normal girl. Come Louise, join us." Alice said
"You won. Here I come." Louise said and sat behind Alice, making the first use of her new cock and fucking her friend's pussy.
The centaur threesome ran wild in the forest, the three girls moaning loudly mostly when they came. After coming for the first time, Loise and Alice just switched places and repeated the process until they came one more time.
They still weren't satisfied, so Teri told the two centaurs to lie on the floor with their legs up while she got between them. She then wished that her mouth and throat could stretch indefinitely without any problems, took Louise and Alice's cocks, joined the ends and opened her mouth absurdly, putting both inside. She sucked two horse cocks at once with no problem, continuing on and on until Alice and Louise came. She felt the two of them fucking descend inside her until she reached the only stomach she had, the one that was in the belly of her horse body and was much bigger than the human version.
After that they were finally satisfied, they drank from the creek water and discussed what to do since they didn't know if they would make it off the island, all the while with Teri lying so they wouldn't know it was all her doing.