Mark knew that Felix and Maria wanted Mark to go first, and Mark wanted to go first, so Mark raised his hand, and with the other hand holding the last dildo, he stuck the long end into his mouth. Felix and Maria could feel the dildo enter their mouth as they watched Mark slowly slide it deeper and into the back of his throat before the width of the butt plug end stopped at Mark's lips. All three were swallowing in unison, as they felt Mark's throat muscles clamp down on the end of the smooth shaft and try to pull it deeper into his throat. Mark was stuck like this for a long time, breathing and swallowing against the smooth shaft. The time all three were fixated on their oral compulsion, Felix's erection had returned, as well as Mark's, as the three felt the deep throbbing of Maria's vagina and the throbbing of two fully engorged penis shafts.
Mark's throat was getting raw, as each swallow put a good amount of grip and pull on the shaft. Mark was making slower, longer swallowing attempts, then, the large end went past Mark's lips, then teeth, and into his mouth, imobilizing his jaw. This was uncomfortable for all, but Mark was now unable to breath, and worked his tongue and swallowed furiously as the large bulge of the butt plug end slowly moved and stretched Mark's mouth and throat. Mark needed to breath, and suddenly, Mark's throat relaxed, stretched, and pushed the dildo entirely into Mark's esophagus, clearing his airway for him to breath again. All three were choking and panting as if they had all done what Mark had done. Mark looked over and smiled at an out of breath Maria and Felix. Mark could hear Felix saying It was about time, but Felix's lips did not move. Maria was thinking it was odd seeing herself with someone else's eyes. Just as the box had stated, we were now linked in body and mind. Complete telephathy was something like an echo chamber, when one had a thought, the others repeated. This did not last long, as it was quite annoying.
Mark picked up the box and went to the kitchen while Felix and Maria had sex, that ended up being all three sharing in Felix and Maria's bodies having sex. The longer the three were linked, the connection deepend. Mark became aware of Felix's strong desire to move out and marry Maria, and Maria's opposition since she still had a physical crush on Mark. Mark became aware of Felix's toleration of intimacy with Mark, but preferring Maria instead. Felix, aware that Mark was becoming aware of things he never shared, was doing his best to explain these feelings to Mark and Maria both.
Felix was hurt when he became aware of Maria's crush on Mark, and that she did not want to marry him until he got serious, stopped being lazy, and actually had ambition and wanted to start an adult life together with her.
Maria didn't care, yes she had secrets and feelings she didn't share, but thought to the three of them, "Bring it on, dig through all you want." And as Felix orgasmed into Maria, Felix kept thrusting, as he knew Maria's orgasm was still building and kept going until his cock softened too much, then continued with his hand until Maria's orgasm had lasted for well over ten minutes, lasting for several waves.
Mark reading the box was as if they were all reading the box, but only Mark was paying attention. The other two were still busy enjoying the shared orgasm. The echo chamber was annoying, as Mark thought, "The instructions are different", it repeated many times before there was calm. Mark took the box, a notepad, and a pen back to Felix/Maria's bedroom.
Each took turns writing on paper the desired change that they would be left with once the dildo's returned to the box.
Mark detached the page from the notebook after writing his and put it in the box, just as the instructions stated, and put the box in an empty drawer in a dark part of the room. "Cool and dry" they all thought in unison. Non verbal communcation was faster, but it was as if everyone was talking at once. Maria smiled to Mark as he joined the three on the bed, where Mark and Felix both took it slow and slid their erections into Maria, with Felix getting the front, and Mark taking it slow up her ass. The two dildo's inside Maria were a challenge, but the accomodating and stretchy shafts pushing into her opened up and swallowed the silicone smoothness. All three felt the shared orgasm build, not in unison, but close enough. Maria was quite intriged by the sensation of the two shafts inside her (Mark and Felix's) moving up and down the dildos inside her. Mark and Felix quickened their pace, and in close succession, Felix and Mark erupted in orgasm, while continuing to thrust into Maria as forcefully as they could, until her orgasm knocked them all still and quiet.
Felix awoke first that Sunday, but it was late, just after 2 in the afternoon. Felix could tell it was done, as he got up and stepped over to the mirror doors on the closet. Felix was 72 inches tall, but was no longer a heavy set (yes, fat) caucasian man. He took a cue from Mark and went for a surfer body. Felix looked more 16 than 28. His skin was tight, muscular definition, and no body hair, not even his head. That was Maria's doing, as she had a thing for bald men. Felix reached down to stroke his semi-flaccid shaft, and smiled as his large hands struggled to grip his large canine shaped cock complete with a slightly visible knot bulge, as that was Mark's suggestion.
Maria was the next to awaken. She pushed herself down to the bottom of the bed before sitting up and watching Felix, who still looked like Felix. Maria was a 64 inch halfbreed whose native american father married her spanish mother. She stood up and stopped next to Felix. Maria could not read Felix's thoughts, or feel the sense of touch on her ass when she stroked her hand over Felix's butt. Maria smiled as she wasn't looking into Felix's chest anymore since she now stood 70 inches tall. Maria smiled at her new height, while Felix noticed the shiny dark skin patch above Maria's pussy where her clit would be, as that was Mark's doing too, an equine shaft and a prostate. Felix smiled at Maria's teardrop perfect DD breasts on her swimmer's framed body. Maria had excercised and dieted off and on, and now had a body that was previously unattainable.
Mark was still asleep, which gave Felix and Maria the idea to wake him. They both crawled into bed, which Felix crawling behind Mark, and Maria facing Mark. Mark seemed to remain at 70 inches. Maria smiled as she got her change, as Mark now shared the female swimmer's build that Maria had, but with a lightly tanned caucasian tone and bright red hair. Mark upped the size of his teardrop breasts to an E cup, but his nipples were quite large. Felix felt his contribution to Mark's ass, a lubricated vaginal ass with prostate. Mark's other change was a follow on to Maria's, as male sex organs were now replaced by female organs. Mark's initial shemale idea was molded by Felix and Maria, who thought Mark should go full female, and he relented to get Felix onboard for a canine cock. Mark awoke to Felix's cock sliding in and out of his ass, while Maria's horsecock was still stretching out the opening of Mark's new pussy. Mark awakened quickly, his eyes wide with surprise, "Guys...hey....stop...stop...stop...please...stop...hold still."
Felix patted the top of Mark's shoulder, and held still while fully inside Mark's ass, while Maria gave a few more thrusts and then remained still, her new equipment having a time with Mark's new supertight pussy, the tightness is thanks to Felix.
Mark heard his paniced voice, definately female, but deeper than Maria's. Mark clenched his ass tightly, and felt Felix's cock pull tight against his prostate. Mark closed his eyes, and was met with only his own thoughts and the sensations of his new body. Mark kept his eyes closed, and whispered, "Alright, continue. Do your worst."
Felix and Maria were back at it when they heard continue. Felix was close, as his knot was swelling, and right before it popped, Felix thrust hard into Mark and savored his latest orgasm, enhanced by the throbbing knot that swelled to the size of a softball inside Mark's ass. Maria's time was harder due to the stretchy but very tight vagina Felix contributed to Mark. As Maria became fully engorged, only about half of her cock fit into Mark's pussy before hitting hard against his new cervix. Maria didn't really care and kept pressing, thrusting hard, before that really tiny and tight hole stretched against its will to allow more of Maria's cock deeper into Mark's body. Maria didn't last long with her cock fully penetrating Mark, and her male orgasm was so intense she was screaming, "Yes" over and over. Mark didn't get his orgasm, close with the prostate, but the horsecock in his pussy was so tight and huge, he thought Maria was going to work him raw. Mark's pussy was throbbing in pain from Maria's large cock, yet it was a pain he could get used to.
It was a while before Felix's knot shrunk. Felix took the first opportunity he could to slide out of Mark's well lubricated and tight ass. Mark knew that Felix might have something to say when he see's how large Maria's cock really is when fully engorged.
"That hit the spot," whispered Felix to Mark, as Felix rolled to the other side of the bed and went to get a shower.
Mark opened his eyes and kissed Maria's forehead, as she was waiting for her cock to soften. "Remember, it stays hard until I orgasm." Mark heard Maria sigh heavily and groan, then was rewarded by her thrusting into him.
"I can't tell how close you are, you have to guide me to the spot." Maria groaned as she thrusted slowly.
"Pull out about half way," Mark offered.
Maria complied, and heard Mark say, "Now short, fast thrusts." Maria adjusted and worked into a constant back and forth of just an inch or so, but she could feel the rough area of Mark's G-spot against the head of her cock. Mark gasped, "Almost....keep...."
Maria started to slow down, when Mark opened his eyes, "No....keep...." With that, Maria resumed her previous speed. Maria felt her orgasm build again, and then she erupted in orgasm again, feeling her body pump something into Mark. Mark was being overtook by the female orgasm, and after a few waves, he had to get Maria's cock out, an started to slide backwards away from Maria. Felix had finished his shower and was watching the two on the bed, when he saw Maria's cock emerge from Mark's pussy.
"Damn, that's bigger than me," exclaimed a surprised Felix. "I thought we agreed on 12 inch maximum," Felix said, sounding not only a little hurt, but as if it wasn't right for Maria to have a larger cock than her boyfriend.
Maria was still savoring her second orgasm, while Mark's pussy was gaping and throbbing, but it's diameter was shrinking slowly. Maria reached over and slapped Mark on the thigh and laughed, before rolling off the bed and stammering to the shower.
"Everyone got what they wanted. Compromises were made," a tired Mark panted.
Felix sighed and nodded in agreement, "Your right.." Felix went into Mark's room, and returned with Mark's drivers license. Felix smiled proudly, and handed the license to Mark to see.
"Marcia?," said Mark in a very high female tone at that point. "Well, they got the sex right at least," Mark said in a sarcastic tone.
Felix nodded in agreement and sat down on the bed, leaning over to stick his index finger into Mark's nearly restored tight pussy. "They sure did, Female," Felix said proudly as his finger slid into Mark's tight opening.
Mark tolerated Felix's finger between his legs and asked, "Why didn't you tell me you wanted to move? I would not have continued a sexual relationship with you if you told me how you felt."
Felix sighed, gave Mark's pussy a good shove to press his finger deeper and onto Mark's G-spot., "Hah, found it. Hey, I didn't tell you because we are friends, and I wanted you to be happy. We can always change things back or to whatever will fix this for you," Felix said with protest. Felix was doing a number with his finger on Mark's G-spot. Felix could feel the rough spot throb and Mark push hard against Felix's finger to limit penetration. Mark was grunting in protest as Felix felt the familiar spasm of female orgasm. Felix smiled proudly, "You can thank Maria for teaching me that, and your welcome by the way." Felix continued to assault Mark's G-spot until Mark slid further back onto the bed away from Felix. Felix gave up fingering Mark and slid to the bottom of the bed to stand up.
Mark's face was flush, a deep red, and his body was throbbing, "Whoa...this body....we felt Maria's before, but this...," panted Mark.
Maria walked in from her shower, her cock much smaller now, and partially retracted into her sheath. "What did I hear about changing back...let's back up." Maria said in sincere tone.
Mark raised his hand wearily, "We are good." Mark then rolled off the bed slowly, and walked to the shower in his bathroom, stopping briefly by the mirror on Felix/Maria's closet door to check himself out and by Maria's sex toy drawer to get two vibrators. Mark rather enjoyed how his face and chest turned out.
Felix and Maria were locked into a gaze of Mark's athletic ass as he walked out of their bedroom. Maria punched Felix in the upper arm, "If you want to be mad, be mad at me," scolded Maria to Felix.
Felix looked down at the floor then hugged Maria, "I'll apologize to him." Felix kissed Maria's nose. "I still feel how hurt he was when he found out about us moving out," a somber Felix remarked.
"Don't forget your give only one-sided sex partnering with him," remarked a still scolding Maria. Maria then stepped up to be chest to chest with Felix, and reached down to find his shaft. Felix arched an eyebrow when Maria guided the canine tip to her pussy opening. Felix grinned, as Maria also had a superight pussy. Maria then crawled into the middle of the bed and gave Felix a rather coy look while using her index finger to summon Felix onto the bed. Felix was already hard as he crawled onto the bed, and onto Maria, before sliding the half of his cock into Maria's cock sheath. Maria winced, "Wrong hole." Felix then fully withdrew and slid down to the next hole, which was much tigher, and Felix growled proudly as he took Maria's virginity from her new pussy, feeling the hymen give and allowing for Felix's cock to fully penetrate her very tight, and very slick vagina. Maria was making squeaking noises as Felix's cock was stretching her.
Felix paused a moment, "Your squeaking like a mouse."
Maria responded softly, "Because it feels so goooood." With that, Felix continued to plow ahead, working his knot against her opening, still too tight to allow it in. Felix didn't have long, but waited until he was just about to pop when he pushed his knot, in the process of swelling past Maria's vaginal lips, and firmly against the rough skin of her G-spot, where he continued to thrust. Maria's sounds turned from squeaks to grunts, then to whimpers. Each....thrust....with...the....knot...was....a...surging...wave...throbbing....through...her...body....
Maria tapped on Felix's shoulders, "Stop.."
Felix looked at Maria, he too was in pain as her super tight pussy was sqeezing his knot in a most delightfully painful way. Felix slowed his thrusting, even though he was only moving his shaft a centimeter or two, it was enough to let his knot overload Maria's g-spot. Felix stopped completely when Maria's taps turned into full on punches into his arm.
Maria panted, "Do that to me every time."
Felix growled proudly, "You got it my dear." Felix was going to be hard for a while, and relaxed onto Maria's body. Maria wrapped her arms around Felix, kissing the top of his bald head, and feeling happy.
Maria whispered to Felix, "Will you marry Mark and Me?"
Felix kissed Maria's shoulder since he could not reach her lips, "It would be my honor. Did you see that ass on him?"
Maria laughed, "He doesn't know how to appreciate a body like that. What were you thinking?"
Felix chuckled softly, "We have a canine cock and a horsecock between us, I wanted something of similar value."
Maria sighed, "You screwed up, we got the better value. I want to stay like this for a long time, especially after we get done having kids."
Felix chuckles, "You mean Mark having our kids."
Maria kisses Felix's head softly, "I'll have yours too. I don't want to be too jealous over our jailbait baby momma." Maria sqeezes Felix tightly in a hug, and whispers, "Besides that knot we are enjoying was his idea."
Felix smiles, "Yea, and I did collaborate with him on making anal something to look forward to for all of us."
Maria punches Felix's shoulder, "And he is the middle to our sandwitch. That was also you and him."
"And everyone's happy," Felix proudly proclaimed.
"You need to get off your ass and into that PhD program and get a real job, something that pays you to use your mind and not sit on your ass. Both of you promised to be ambitious and work to achive. I'd hate to see what we have now become what we were. I will be a real bitch on this to you both," Maria chided.
"You do that. Don't be dissapointed if we don't give you the satisfaction of being our mother," Felix said sincerely. "Different topic, I think our future baby momma is stuck with two vibrators going at the same time. But it can wait, this will take while," Felix said wryly. Maria's pussy had vacuum formed to Felix's knot, with each throb of the other delaying the softening of the knot. This was going to take a while indeed.