Mike stared at the two pairs of underwear on his bed while still caressing and groping his 36D breasts that he had "stolen" from his sister. They were still sticky from having shot a huge load all over them.
He was obsessed with making further swaps, but he didn't really understand how the magic worked. Was there some way that he could only swap his mom's ass without taking her vagina. Same for his brothers cock: he definitely didn't want his brothers flat, boney ass.
Mike thought about asking the genie that had granted him his body swapping abilities, but he didn't want to fuck up this incredible wish. He was scared that the genie would mess up his wish somehow, like the story about the monkey's paw.
He thought about the chest hair that hadn't swapped when he first got his sister's tits. Somehow he knew, instinctually, that he could prompt further swaps but rubbing the article of clothing over the area and focusing on the swap. Maybe that instinct was part of his new ability?
Mike stood up, walked over to the bed, and grabbed his brothers boxers. Mike always wanted to have a massive cock, so he thought he'd start there.
Mike looked at the boxers inside and out. They were definitely worn: he could see dried precum on the crotch. He also noticed how stretched out the groin was.
Even though he had just had a mind-blowing orgasm only a few minutes ago, the thought of swapping with his brother and having a huge dick swinging between his legs caused his own 4.5 inch cock to harden.
Mike lowered the boxers to his crotch and started rubbing them over his dick. After a few seconds with no changes, Mike kept rubbing but focused on his brothers dick swapping with his own.
Mike felt a jolt of electricity on his cock so strong it caused him to drop the boxers.
A huge smile crept across his face and his mind was filled with joy as he saw the skin on his cock start to shudder.
His dick grew out as quickly as someone inflating one of those balloons used to make party animals. Mike wasn't surprised at the shocking swiftness of the transformation, seeing as his tits had appeared just as quickly, but he had quietly hoped the transformation would have lasted a bit longer.
Speaking of longer, his erect dick was certainly more than double it's original length. If he were to guess, it looked like his cock could almost be a foot long!
Another surprising feature of his brothers cock was that he was uncircumcised. Mike had never really noticed before, or perhaps it had never occurred to him to notice the difference when he had seen his brothers dick in the past.
He reached down with both hands and gripped the massive organ jutting out from his body at a 90 degree angle. It was so thick that he could barely wrap his hands around it, and so long that a good two inches poked above his hands even with both hands on it!
Mike started to giggle at the ludicrous size of this dick. No wonder his brother was such a pompous asshole, despite being a scrawny nerd. He was hiding this fucking meat club in his pants!
Mike squeezed his dick hard, forcing drops of precum to spill out onto the floor. He wanted to jack off so bad, maybe even play with his perky tits again while he beat his meat, but he had another idea.
He let go of his cock, letting it bounce and sway from side to side. Mike would have thought that a dick this size couldn't get as hard as his old dick, but this donkey dick was like a steel pipe. It's sheer weight was the only thing keeping it from pointing up at have face. Instead, it continued to defy gravity and stuck straight out in front of him.
Mike turned to the mirror to check himself out. Beautiful face, huge muscles, gorgeous tits and a giant cock. Mike felt the urge to flex for himself. Mike struck a classic bicep pose, his arms raised above his head. As soon as he flexed, his big tits and giant cock bounced together in tandem. Mike struck several poses, filled to the brim with a delight glee at how his tits and cock were bouncing around.
Mike couldn't stay waiting any longer. He could feel his tits aching to be caressed and his cock was begging for release.
Mike flopped onto his bed and started to pinch and twist his nipples with his left hand while beating his cock with his right hand. The feeling of pleasure was indescribable.
It was more that, though. Mike's mind was reeling at the sheer impossibility of what he was experiencing. He was looking down at his transformed body in awe, like it was something out of a dream. Past his perky, beautiful tits...HIS perky, beautiful tits...was his new, giant donkey dick.
He felt like he was on the edge of sanity, which drove the eroticism of the situation beyond the limit of anything he had ever imagined possible.
Mike could feel himself getting close to cumming. He wasn't quite ready to cum just yet, so he let go of his dick, which slapped heavily against his stomach. His old dick wouldn't have even gone past the top of his pubes. His brothers dick was so long it went even past his navel.
Suddenly, a wicked thought occurred to Mike. He had an idea, but it was unbelievably twisted. Was it even possible? It seemed like it just may work, but could he really...?
To hell with it, Mike thought. Either it works or it doesn't.
Mike lifted his knees towards his chest, spreading his legs wide like he was doing a squat. His dick head was slowly coming closer and closer to his face. His dick was now resting between his tits, which were still sticky from the cum he had shot before he swapped his dick with his brothers.
He grabbed his tits, one in each hand, and pushed them together, enveloping his brothers massive dick with his sister's perfect tits. But they were all his, and he was going to titty fuck his own breasts with his massive cock.
Mike started rocking himself back and forth. He was really doing it, he was honestly giving himself an auto titty fuck!
The sensations were beyond anything he had felt so far. It only took five thrusts before he could feel hot cum rushing up his shaft.
Just as the first shot if jizz exploded out of his dick, Mike squeezed his tits together hard, roughly pinching his nipples between his fingers.
Hot cum splashed Mike right in the face. It went in his hair, it was in his eyes and it went into his mouth, which was wide open in a large O from the intensity of his orgasm.
The second shot filled his mouth. The third shot coated his tits in a fresh layer of cum. Every shot after just pooled above his tits, rolling down the side of his chest.
Mike remained frozen in place. He was so overwhelmed with pleasure that he feared to move. He swallowed the cum in his mouth. It tasted like him but... different. Maybe this is what his brother tasted like.
Eventually he managed to let his legs fall back onto the bed. Mike was completely burnt out, his tits soaked in cum, his still hard dick dribbling out cum. He felt like a dirty whore, and he loved it.
After a few minutes, he turned his head towards the past article of clothes he had stolen to swap with; his mother's panties.
He reached out and grabbed them.