"Hey Dustin." Ty got a brilliant idea. "Hold out your arm."
Dustin did as Ty suggested. "Mind if I ask why?" He raised an eyebrow.
"I just have a thought." Ty grabbed Dustin at the armpit and their arms merged slightly. Ty then started puling, but on Dustin's arm. Soon they were free and Ty righted the arm. "It works. We can swap parts." Ty returned the arm.
"So, what, we just touch and then pull the other's part?"
"Exactly right."
"Then how about a little fun." Dustin and Ty stripped. Each brother grabbed the other's thighs and pulled. Soon Ty's arms were Dustin's legs and his legs were the arms, with Dustin the same way. "Ty, someone's going to notice if we keep this up."
"Then I'll fix that." A quick mental wish, and the world would think it normal however they looked or acted. "Problem solved. Now let me try that torso of your's" They bumped together and after a couple minutes they figured out how to twist just right. Ty's head was now on most of Dustin's body with flipped Arms and legs.
"Dustin, is this hot for you or something?" Dustin's remaining member was starting to rise between Ty's beefy arms.
"Actually, yes." He admitted, blushing.
"Well then, I'll do something about that." Ty used his new hands to grab Dustin's ass. They sank in and now he was suspending himself by Dustin's hips. He wished his cock hard too and then touched the heads together. He pulled back and the two penises merged while Dustin's ball sack fused with Ty's, giving him 4 balls dangling beneath the monster cock. He focused on his new, fused body, and where Dustin now had a smooth crotch, a new opening started to form. "I wish we were flesh and blood again." He said with a grin.
"I don't like where this is going." Dustin said. "Are you trying to get pregnant or something Ty?"
"No, just try something new." Another mental wish and their feet were hands again while Ty's former hands turned to feet. At the same time, Dustin grew very large, very prominent breasts, which Ty took the liberty of squeezing. "Perfectly formed. You ready?"
"Do I have a choice?" Dustin was still clearly a male in his mind, and not looking forward to having what would be his penis plunge into him.
"Not really." Ty lowered himself and then pushed the 10" member with all his might into their vagina. Both boys felt the pain of a woman's first time and at the same time, the pleasure of their cock. "That was interesting."
"I didn't know we would feel each other." His sibling commented.
Ty pulled back, almost out, then thrust again. Again and Again it went. The pain subsiding mostly, then pleasure from both parts and they self fucked. Dustin moved at the right moments and Ty continued to hold Dustin's breasts while thrusting. Finally, they kissed as lovers, holding each other as both male and female parts climaxed.
"That." Sighed Ty as they collapsed on the bed. "Was great. Should we switch roles?"
"You know it! Just wish it true." Dustin's eyes lit up enthusiastically at the thought of fucking his brother.
"Well, then, stand up." He brought them back to Silly Putty, then thrust their member into their hole. Dustin grabbed tight and when Ty pulled away, the cock was on Dustin's half of the body. Dustin then thrust his chest into Ty's, where the transformation was complete. Ty wished them back to flesh and pulled herself closer to Dustin, who vigorously took advantage of this. Harder and more forceful than Ty, and quicker, but the actions lasted longer in memory. In and out, grabbing and kissing, soon climaxing at the same time and violently letting the boys fall to the bed.
"Ty, what if we did something here? You know I don't want to abort my children, ever."
"I'll wish us 8 months older." As he said that, their body barely changed, except Ty's formerly' rock hard abs, that Dustin worked so hard for. His belly bulged and pushed the two apart. "You're carrying the child." He said flatly.
An hour later, and the boys had their body parts sorted out. "Ty, could you do you're little trick and just let it be born 15 years old? It would save us a lot of time and and make things easier."
"Dustin, we're only 18. We would be 3 when our child was born. But you're right. It would be a lot easier."
"So you'll do it?" Dustin asked hopefully.
"Ya, but it comes with a price, you stay female, unless I decide otherwise, and my personal plaything."
"Deal." Dustin said. "I'd even be willing to carry it longer."
"Good, because you're carrying it for 2 years without any acceleration." Ty made his wish and although Dustin looked male with clothes on, or at least his boxers, they knew what was going on.