Jane heard Tony calling for his girlfriend and thought of a funny thing she could do to tease her older brother. While still balls deep in said girlfriend Jane pulled several of her special pills out of her pocket and shoved them into Becca’s mouth that still leaked her cum.
Becca instinctively swallowed the pills, which then began dissolving inside her still cum stained digestive tract. Jane wasn’t sure the exact changes that the pills would have on the older girl but she expected Tony wouldn’t like them.
Tony’s calls got closer and Becca finally regained her focus, realizing the situation she was in.
“Oh fuck. Tony can’t see me like this” exclaimed Becca still mostly limp over the bathtub wall looking down at the cum covered mother of her boyfriend. Jane could have helped the girl get up and get dressed for her brother but didn’t even bother to pull out her massive cock that still occupied a significant portion of Becca’s body.
“Jane please I can barely feel my legs right now can you help me up, Tony will check in here any minute now” pleaded Becca.
“Ok Becca, let me try and get you” said Jane before she grabbed Becca’s waist and tried to lift her with all her might. Becca placed her hands on the rim of the tub and pushed herself up attempting to get to her feet. Jane then tried to pull Becca away from the tub and onto her feet. Becca then in her overeagerness to get back to tony stepped back around Jane and slipped on the cum stained floor. The two then tumbled to the ground with the older girl landing onto of the younger. Jane landed with a grunt of pain but Becca landed with a moan of pleasure as the immense cock that Jane hadn’t bothered to pull out of her when they began to stand up, plunged as deep as it would go into her body.
“Of fuck Jane I’m so sorry are you ok” said Becca as she sat on Jane’s lap as the young girl sat on the floor. They both were now facing the door and completely exposed to anyone that would enter.
“Ow ow ow, you almost sat on my balls, get off you big meanie” said Jane in a petulant tone unhappy to have been fallen upon regardless of how pleasantly her cock was brought back to full hardness inside the older girl.
“Please Jane I swear I didn’t mean to land on you I just slipped. You have to help me get up Again I think I’m stuck to your cock it’s so deep” moaned Becca pleading for Jane’s aid as her legs were growing numb from pleasure.
“No you can get up yourself this time” said Jane before she crosses her arms and pouts.
Desperate to not be found by Tony and knowing Jane couldn’t be persuaded to help Becca tried to stand herself up with her tired legs. She slowly pulled her feet in towards her crotch from their splayed out position until they ran into the cantaloupe sized balls that dominated the space between Jane’s thighs. Sliding her feet to either side of the gigantic balls allowed Becca to get her feet under herself and begin to tremblingly push herself up. The process was extremely slow as it felt like she was pulling herself inside out as the fat cock head dragged against the inside of her body. She had only made it about halfway up off the cock when an unnatural heat swept through her body and Becca’s already weak legs gave out. Becca unsupported was left to slide back down to the base of the shaft loosing all the progress she had made. Becca was mentally frustrated but her body couldn’t help but squirt and moan from the pleasure of having the cock return to the core of her body. Tony must have heard the moan’s this caused because he was then heard saying “Becca are you in there”.
If only Becca could get off the cock and grab two of the bathroom’s towels, she could hide Jane’s and hers nakedness. She could have probably come up with an excuse for why they were in nothing but towels but this, there was no excuse.
Ignoring the heat that had spread throughout her body and was only growing, Becca made a final attempt to free herself from the cock and grab the towels that hung ever so close by. This attempt brought Becca farther than her first but it was getting harder and harder pull herself off the cock the further she went. Her legs trembled with the effort and were about to give out when Tony without knocking entered the bathroom only to freeze at the sight before him.
Becca saw his shocked face and her legs gave out for a second time. She was sent back to the base of the cock, and despite her best effort to not show Tony how much pleasure she felt the drop caused her naked pussy to squirt a spray of warm pussy juice over the floor in front of her with some of it getting on Tony’s bare feet.
Jane had remained stubbornly seated on the ground indifferent to Becca’s struggles but at the same time that Becca had felt the unnatural warmth build in her body so did Jane feel a familiar sensation grow in her cock.
The sensation that jane had gotten every time she had consumed the pills to make her cock grow was again spreading throughout her member, but this time she hadn’t been the one to take the pills. Something strange was happening to Becca and Jane’s cock had become involved.
Shaking himself from his shocked stupor Tony rushed to Becca.
“What the hell is going on Becca why are you naked. My god what is that in your stomach. Wait Jane what are you doing down there” said Tony trying to process the outlandish scene before him.
“Please Tony just help me up my legs won’t go anymore” pleaded Becca as she realized she could no longer feel her legs. Tony heard the seriousness in her voice and nodded to her before he looped his arms under hers and tried to lift her up.
Unlike the two times that Becca had tried to get up this time Jane felt herself being lifted up along with the impaled girlfriend. The odd distribution of weight overbalanced Tony and he was soon falling backwards with both Becca and Jane falling on top of him.
Now that Jane was at the top of the pile she could get her feet underneath her, but when she tried to step back and separate herself for Becca she found herself stuck.
Looking down at where her crotch met Becca’s ass she found their flesh had fused together and veins had started to spread from her into the older girl.
“Oh god Tony I feel so hot and you feel so good against my skin. I can feel my body changing but please I don’t want you to leave. Just stay here and hold me.” Asked Becca between moans of pleasure.
Unsure of what else he could do Tony complied and wrapped his around his girlfriend. She let out a deep moan at the contact and began rubbing herself against him.
While this was happening Jane continued to watch the veins spread into Becca. As they progressed the older girl’s body also began to shift in shape first her legs began to move backwards and come into contact with Jane’s ballsack. Her legs then began to shrink as her balls began to swell till the legs were completely gone and two massive testicles remained.
Becca’s stomach ass and chest began shifting to be a uniform tube which absorbed her arms once the veins had reached her shoulders. At this point it was clear for both Jane and Tony to see that Becca was becoming nothing more than an extension of Jane’s now person sized cock.
“No Jane what are you doing to Becca. This can’t be happening. My girlfriend is turning into my little sister’s cock” said Tony as Becca’s transformation was nearing completion. The phallic bodied girlfriend then started to rise off her boyfriend, only supported by the small Jane.
“Oh Tony it’s too late for me everything feels so wonderful for me right now but I want you to kiss me before this ends” said Becca while a bulge of foreskin swelled around the base of her neck.
“I don’t want to you go Becca I love you.” Said Tony before he began making out with what little remained of his girlfriend.
The foreskin then began pushing up over Becca’s leaving only her face exposed then it forced Tony and Becca apart completely covering her from the world. Tony then desperately tried to peel back the foreskin but it remained tightly shut as Becca’s moans slowly died underneath it. Once there was no sound left the skin loosened and Tony was able to pull it back. What he uncovered was not Becca but the massive cock head of Janes fully transformed manhood.
“No Becca you can’t be gone” cried Tony on his knees still holding the cock head.
“Oh Tony I’m still here I can hear you but I can’t see you” said Becca but it only could be heard in Jane’s mind.
“Wow Becca how can you still talk your just a cock right now” thought Jane towards the voice in her head
“Tony didn’t hear me so I must just be in your head. Let him know I’m still here” replied Becca to Jane.
“Hey Tony Becca is still here. I can hear her in my mind and she wants you to give her a big kiss” said Jane to her brother before internally giggling to herself. The frantic Tony didn’t stop to think too hard about it and began kissing the cock that was in his hands.
“Jane, stop messing with Tony. While I enjoy the feeling of him kissing me I don’t want you making fun of him. Wait I can feel something different. There is something blocking me but I can push through I think. Tell Tony to step back” said Becca to Jane
“Tony, Becca wants you to step back now” said Jane interested where this was going. Tony complied, removing his hands from the massive penis and stepped away. The foreskin then abruptly pushed itself back over the head.
“I’m almost there I think I can see some light” said Becca to Jane. The massive cock then contracted in on itself before lurching forward again. The foreskin was peeled back when it lurched forward and Becca was revealed.
A flat head resembling that of a horse’s cock was revealed but on the flat surface of the head was Becca’s face smiling at Tony.
“Well Tony I’m back you can kiss me again” said Becca with her new face.
Tony had been through a rollercoaster of emotions and didn’t question it and kissed his partially returned girlfriend.
“Oh Becca you’re back but you’re still a cock. You got this far can you free yourself” asked Tony staring at the face at the end of his little sister’s massive cock.
“I don’t know. Maybe Jane could help” said Becca oddly not panicked.