After a few minutes of post orgasmic bliss Kayla tried to pull out of Alyssa but found herself unable to do so.
"Umm... I think I'm kind of stuck in you can you help me try to pull out ?"
"Well I guess I have to can't really let anybody see us like that." Alyssa answered
"So how do we do this ?" Kayla wondered, "Well I could try to put my legs onto your belly so we can both pull in opposite directions." Said Alyssa.
"Sounds like a plan."
"Alright I'll count down from 3 and then we both pull." Alyssa clarified.
"3" "2" "1, Pull!" As both of them gave it everything they had in their bodies, Kayla quickly felt a stinging pain coming from her genital area.
"Alyssa stop pulling, it hurts." She screamed. Luckily Alyssa listened to her and stopped immediately before looking at her friend, not realizing yet that they were stuck other than Kayla being inside of her.
"So what else are we-" Alyssa did not get to finish her question before the two of them felt a strange sensation as Alyssa's legs seemed like they were being absorbed by Kayla's meaty shaft. As her legs disappeared, Alyssa stared in amazement as the thick veins covering Kayla's cock extended into her torso, arms and neck, her tiny A-cup breasts grew into C-Cups, her skin taking a on a dark brown tone to match the rest of Kayla's cock, with a four light pink spots down her length, ironically keeping her head with her natural light pink skin color. The next thing she noticed was that her hair fallen off of her head leaving it smooth and bald. Finally Kayla's sheath grew to triple of it's previous size to fit its new resident.
While Alyssa was busy with her perspective of the transformation, Kayla both saw and felt her furred testicles grow in size, only stopping after reaching a diameter of around one foot. At the end of their merge the two woman stared at each other, waiting who would speak first in this situation that was even more awkward than it already had been, but in the end Kayla was the first to speak up.
"Alyssa... your drooling." Was the only thing she managed to bring out.
"Oh, this sure as hell isn't drool, my dear Kayla, this is none other than your own pre." Alyssa replied.
"So let's summarize this, I turned into centauress, with Warrior's lower body, I ask you for help with my arousal, just for you to merge with me and turn into my cock. What a day." Kayla summoned up. "And why are you already droo-... leaking again ? Didn't you just have an organism as a human ?" She asked.
"Well, yeah I did, I don't know about you, but I absolutely love this, this feeling of being your mighty, powerful, huge three-foot cock, just turns me on and that in turn makes you hard, thus making me leak." Alyssa explained to her while wiping Kayla's pre off of her mouth.
It was true as both girls felt how Alyssa started to stiffen up, her muscles and veins tensing as Kayla was forced to watch due to still laying on her back.
"I have to get up first, this is getting super uncomfortable." Kayla mumbled, before lifting her equine body, rising into a standing position again.
"Now then how do you think we are supposed to deal with the boner that you have become Alyssa ?" Kayla asked, and although she could not see it, Alyssa had a smugging smile on her face below her.
"Simple Darling, I still have my arms, I can jerk us off." The Cock-turned-Woman replied.
"Alright then better get to work, Alyssa, you're killing me." Kayla ordered.
Swiftly, Alyssa's hands were all over her body, hugging herself up and down her torso for multiple minutes, feeling their orgasm build itself slowly. When they came to he critical point, Alyssa suddenly used all the muscle strength she had in her penial body to hold back their sloshing sperm.
"Alyssa what are you doing ? I want to get off !" Exclaimed Kayla down to her body mate, who replied with:
"Simple, I want to hold back as long as I can, to make OUR first merged orgasm special. I'll count down from 3 and then we blow our load." and began counting
"3....2....1...."
What followed could only be described as an explosion, both physically and mentally for the two woman, as in a seemingly endless way, Alyssa vomited burst after burst of warm stallion seed, coating herself, Kayla's belly and frontal as well as the stable floor below. After almost thirty seconds of constant orgasm, the stream finally died off, causing Kayla's body to give out and collapse on the white stained floor.
It took Kayla a few seconds to catch her breath, never would she imagined to experience such levels of pleasure and, although she didn't want to accept it, affection for a part of her body. When she looked down beneath her belly looking for Alyssa, she found that her cock had mostly retreated into her sheath, with only Alyssa's head still sticking out.
"Are you alright Alyssa ?" Kayla asked in a worried tone.
"Of course... I am, that....that....was the best thing I ever did....and this merge...was the best that ever happened to me. I'm gonna go for a lie down now." Alyssa replied while panting, before sliding her head down into the sheath as well, leaving Kayla on her own.
As Kayla stood back up, she realized both the mess they had made, but also that they would be more than screwed if anybody found her, so she decided to make use of her strong horse legs and head for the nearby woods.