After talking to the others and having dinner, Emily took Briana to her room, which they would share.
"So Briana, did you get to choose what your change will be?" Emily asked
"Not yet. I will think for the night and give an answer tomorrow." Briana said
"No need to rush, you have time." Emily said
Soon after, Emily started to undress, taking off her blouse and bra saying "I'm going to sleep here with you today. I hope you don't mind, but I prefer to sleep naked."
"No problem, I prefer to do the same." Briana said and started to undress too
As she took off her clothes, Briana watched Emily, who had her back to her, taking off the skirt that covered her horse body. She finally managed to see that Emily's horse body was covered in white fur, but she realized that there was one more thing that shouldn't be there.
Not believing what she was seeing, Briana stuck her hand between Emily's back legs asking "What is this, Emily?"
Emily was scared when Briana touched her and almost kicked her, but she managed to control herself and said "Briana, you scared me by grabbing my testicles like that. I almost ended up hurting you."
"Your ... testicles?" Briana asked
"I'm sorry, I forgot to say that you can choose the sex of the animal that will have the DNA attached to yours. When I chose to become a centaur I chose my horse part to be male." Emily said
"If so, then you have a cock too, am I right?" Briana asked
"Of course I have a dick, only it is well kept inside the sheath and it won't come out unless I need to pee or have a hard-on." Emily said
Briana had been totally surprised by that and could no longer say what had surprised her the most that day, finding out that Emily was no longer human or finding out that she was male down there. But even so, she started to find even more interesting what could await her while staying on that farm.
"This is very interesting. I want to see this working." Briana said and went under Emily's horse body, where she could see her sheath very well, and started to caress her balls with one hand and put a finger of the other inside the sheath, finding the tip of her dick there.
"Briana, what do you think you're doing?" Emily asked
"I already said that I want to see your dick in action. Now, please make this thing hard for me." Briana said
"I can not my dick is too big, you are still human and I will end up killing you if I fuck you." Emily said
"I know that, but I never said you were supposed to fuck me." Briana said
"Okay, so at least I don't have to worry about your reaction to seeing me having an erection." Emily said and immediately Briana felt her finger being pushed out of the sheath by her hardening cock.
As Emily's dick was getting hard, Briana made sure to stroke it trying to make it as hard as possible. As soon as her dick got completely hard, Bricana said "You weren't kidding when you said you could kill me with this, your cock is huge."
Emily then said through her moans "It is 24 inches long when fully erect."
"And all those inches are my toy now. Emily, I want you to lie down with your legs up." Briana said and Emily did exactly as she asked. Then Briana took the hard stick on Emily's horse belly, got up and sat on it. Then she put the stick between her breasts and started rubbing them. With the size of the stick, there was a good part left over her breasts and she started to suck it the best she could.
"Yes, just like Briana. You are really good with this, at this rate I will come quickly." Emily said
"That's exactly what I want to see. I already tasted Fran's milk, now I want to taste yours." Briana said
"Ah .. I'm going to come .... I'm going to come ... I'm coming ... Aahhhhh" Emily said and came. Briana just watched with amazement the cum that was shot up by Emily's cock, with some of the cum falling on her and the rest on the human part of Emily's body.
After Emily's orgasm ended, they were both soiled with cum and decided to take a shower together before going to sleep. The bathroom in that room was big enough for Emily to be able to walk quietly there even with the size of her horse's body, the floor also had a special floor that didn't break easily and on which Emily's hooves didn't slide easily.
They opened the shower, which was connected to a hose to allow Emily to wash her entire body. She had some tools to help, but this time Briana washed where she couldn't reach.
As she passed the shampoo over Emily's horse body, Briana realized that her dick was coming out of her sheath again just as she said "Briana, I need to pee, you can take that bucket and put it under me."
Briana went to where Emily pointed and took a metal bucket, put it under Emily and was cleaning her ass, next to her tail, while she pissed in the bucket. While doing this, she looked at Emily's ass and then asked "Emily, I was watching here and seeing that you no longer have your vagina. Don't you miss your vagina?"
"Well, when I decided to be a centaur and the genes of a male horse informed me that the taur transformations totally replace the lower part of the body and therefore I would no longer have my vagina I thought I would miss it. For some time I forgot that I didn't have it anymore and there were times when I even thought I might be pregnant before I remembered that there was no way. I have had this stick for seven years and today I am so used to it that I feel like this is my normal. Not to mention that in these seven years no one has managed to make me come like you did today." Emily said
"I remember you always said you wanted to be a mother someday. Did you give up on the idea?" Briana asked
"I didn't give up, but for that I will need to ask for leave of work and be restored to my old human form." Emily said "Oh, and before I forget again. If you choose the transformation type Animal Bits or Anthro and you choose the DNA of a male animal, you will have the stick and testicles of the species and still keep your female genitals intact." she completed
"Interesting. So I have already decided what my transformation will be." Briana said
"And which one did you choose?" Emily asked
"Wait until tomorrow when we don't see John. I want to keep the suspense for a while."