Dustin felt weak from the transformation. From the mirror in Ty's bedroom, he could see himself covered in rubber. It made him look strange and foreign. Dustin could not help but be turned on by his predicament and soon his rubberized dick was fully erect. His glans was glistening with precum.
"Well, looks like its not just me who's enjoying this", smirked Ty. "Lets put that new rubber ass of yours to the test"
Ty moved over and forced Dustin down on all fours. He held him forearm out in front of Dustin. "Watch, this whole arm is going to go up your ass".
As Dustin looked, Ty's forearm grew in size and definition, as well as the rest of Ty. He soon had an amazing body. Ty coated his forearm in lube and turned to Dustin's asshole. Dustin's hole was smooth and tight, a virgin's ass. "Not for much longer, thought Ty as licked his lips in anticipation. He caressed Dustin's rubber ass before giving it a firm slap. Then he clenched his hand into a fist and forced it into Dustin's hole.
"Hnnngggh", groaned Dustin as the fist was forced into him.
Dustin's hole was tight but Ty's fist glided smoothly in thanks to the lube and the rubber that covered Dustin. Dustin's asshole gripped tightly around Ty's wrist, the rubber forming a perfect seal. Ty felt his dick getting hard just from the look of it. Ty put his other hand on Dustin's back as he forced his arm up Dustin's ass. It reached as far as his elbow. Dustin groaned in pain and pleasure.
"You like that don't you, bitch?", asked Ty as he twisted him arm inside Dustin.
Dustin could not respond as he was being overwhelmed by the sensations in his body. His rubber dick was rock hard and was leaking furiously.
Ty pulled his arm out and punched in his other arm. He alternated between his left and right, each punch forcing Dustin's hole to stretch wider and wider. Dustin was wracked with pleasure. He had never felt anything like this before. His tongue was lolling out of his mouth and he was drooling. Soon, his hole readily accepted Ty's arm, even both of Ty's arms.
"Look at you, man. You look so pathetic", taunted Ty.
Ty then took both his arms out of Dustin. Dustin's hole was well stretched and was leaking lube. Ty yawned and moved over to his bed. Dustin felt empty without anything up his ass. He looked at Ty eagerly.
"You want more, eh?"
"Yes", pleaded Dustin.
"Beg me for it"
Dustin didn't want to say it but his dick was hard and painful and his ass was empty. It was humiliating for him but he said, "Please fuck me with your fist. PLEASE"
Ty smirked. Seeing Dustin like this gave him immense satisfaction. Ty knelt at the edge of the bed and put his elbow on it with his forearm facing upwards.
"Here slave, come and get it"
Dustin quickly got up and moved over to the bed. He positioned himself so that he was facing Ty and that his asshole was just above Ty's fist. Slowly, he impaled himself onto Ty's fist until his legs were at a 90 degree angle from the floor. Dustin groaned in pleasure as Ty's arm filled him back up.
"Now, fuck yourself of my arm", commanded Ty.
Using his legs, Dustin pushed himself up until Ty's arm was almost out of him. Then he lowered himself back down again. Ty was jacking himself off as he watched Dustin impale himself repeated on his arm. Dustin looked magnificent in rubber and Ty could not resist staring at Dustin's rubber coated muscles.
Ty slowly made his arm bigger until Dustin was having difficulty fitting his entire arm up his ass. Ty's arm grew to be as thick as his legs. Dustin was gripped with pain and he let out a howl but his dick as was still as hard as steel. Ty was enjoying this.
"What's a matter, Dustin? Too big for you?", taunted Ty.
"Yes", groaned Dustin.
Dustin was too exhausted to say anything more as he struggled to keep himself upright on Ty's enormous forearm. Soon Ty shrank his arm back to the size it was before and Dustin collapsed onto the bed, weak from exhaustion. Just as Dustin opened his eyes, Ty put his hand into Dustin's rubbery mouth.
"This was in your ass and now its in your mouth. Suck it, bitch"
Dustin was disgusted at first but then he realized that he couldn't taste anything due to the rubber that coated his mouth. He found himself sucking and licking Ty's fingers with his rubbery tongue. Ty stroked Dustin's rubbery cock as he did this. The smell and feel of the rubber was so arousing. As Dustin neared his orgasm, Ty stopped stroking. Ty moved up and looked at Dustin in the eye. Dustin was desperate to get off and he furiously pumped away at his dick but no matter how hard he tried, no matter how close he got, he would not cum. At this point, Dustin whimpered and Ty saw a pleading look in his eyes.
"Only I decide when you can get off", said Ty triumphantly.
Dustin was frantic and he squirmed around on the bed, but Ty held him down.
"Now, now, don't worry. You'll get off but only after your other hole has been stretched out"
Dustin wondered what Ty meant by this, but he soon understood as Ty balled up his fist and began to force it down Dustin's throat. Dustin gagged and sputtered. He tried force out the arm but Ty held firm. His rubber teeth closed around Ty's arm but they caused no pain. Ty's muscles were like steel. Dustin cried as Ty throat fucked Dustin with his arm, all the way to the elbow. Ty used his other hand to caress Dustin's face.
After a while, Dustin stopped crying. He was resigned himself to this, knowing that Ty had full control over him now. Ty smiled when he saw this. He slowly removed his arm from Dustin's throat while still caressing his face.
Then Ty flipped Dustin over onto his back and slowly began to fuck Dustin. Dustin was relieved by this and he was soon feeling horny again. Ty focused his fucking to make sure he was hitting Dustin's prostate. Soon, both Ty and Dustin were reaching their orgasm. Dustin's ass strongly gripped Ty's dick as they both came. Both of them groaned with ecstasy. Never before had Dustin seen so much cum. It flew into the air and landed onto his face and chest. He kept cumming until he squirted out about 10 ropes of cum. He could feel that Ty was not done cumming and that Ty was slowly filling up his bowels with cum. Soon, Dustin's ass could not hold in all the cum and some of it began leaking out. When Ty saw this, he pulled out of Dustin and quickly inserted his fist into Dustin's hole.
Dustin watched in amazement as Ty's arm grew black and slowly expanded to ensure Ty's hole was plugged up. Ty slipped his arm out of the black rubber he formed on it and the rubber duplicate of his forearm plugged up Dustin nicely, keeping all of Ty's creamy cum inside Dustin's bowels. But Ty was not done yet as cum was still gushing out of his cock.
"Open wide, bitch", said Ty, slapping his dick against Dustin's face while splashing him with his cum.
Ty pushed it cock into Dustin's mouth and began to fill him up with more cum. Dustin had no choice but to swallow. He could feel his stomach being bloated by the gallons of cum he was being pumped with. Then, Ty made a rubber gag in the shape of his dick, gagging Dustin rubber mouth nicely. But Ty was not done just yet. He sat on top of Dustin and slowly moved his dick closer to Dustin's nostril. Dustin realized what Ty was going to do and screamed into his gag. He turned his head away from Ty but Ty gripped his head and forced it still. Then, Ty filled up Dustin nostril with cum. Dustin was sputtering and and made gurgling noises. Ty just smiled. Then he filled up the other nostril with cum. After that he pulled away and watched the cum flow steadily out of Dustin's nostrils. Then Ty repeated this with Dustin's ears. Dustin was too exhausted at this point and just lay there, a cum-covered and cum-filled rubber slave, gagged and plugged up with cum oozing out of his nose and ears.
Ty patted him on the shoulder and slowly spread the cum all over Dustin's rubber body.