Ryan was so excited to get home and try his new magic balloon, what it had done to him before was amazing and he wanted to feel that again.
Ryan ran in his home, his mum was out at work so she wouldn't bother him, he didn't want anyone to know about his balloon, he thought it was a good idea at first but he realised how stupid that was, if people knew about the balloon and got ahold of it, he'd be at their mercy.
Ryan went into his room, got completely naked and went to his mirror, his stick like figure shown in the full-body mirror.
Ryan grabbed the balloon from his pocket and pulled to his mouth and started to blow, his muscles expanding as he did so.
Ryan kept blowing until it was the right size for him, he the stopped and stared at his sexy muscular reflection, his new eight pack bulged under his stiff sturdy pectorals, his arms and legs grew massively in size and his cock.
Ryan's cock stood at attention, unable to bend at 2 foot 4 inches long and 1 foot 2 inches thick, pre cum leaking from the massive muscle.
Ryan went to take the balloon out his mouth but couldn't, it was stuck firmly to his mouth, he kept pulling but it wouldn't budge, he heard his bedroom door open, turning around, he expected to see his mum's shocked face but what he say chilled him to the bone.
The man who showed him the balloon, marked his name on it, blew it up then gave it to him stood there with a most sinister grin on his face.
He walked up to Ryan and put his hand on the balloon "let me help with that" he said as he pushed the balloon down Ryan's throat, then held his mouth clamped shut and put plugs in Ryan's nose until he swallowed the magical balloon.
When Ryan swallowed the balloon, he felt it go to his lungs instead of his stomach, the balloon started to coat the inside of Ryan's lungs and as he breathed in, his muscles expanded until his head was push against the roof, he pulled out another pug and put it in Ryan's mouth, he tried pulling it out but it wouldn't even budge, the mysterious man clicked his fingers and Ryan wasn't home anymore, he was now in the house of his colleges quarterback.
"You know it won't come out and if it did, you'd just start expanding again"
"Wha di ou du?" Ryan could hardly speak, the new Airbags' of his were not like his lungs and he was having trouble thinking of what to say to the quarterback who had only seconds ago, been a 'kind' salesman.
"I made you my property, those plugs can only be removed by the person who's name is on it, me..." Brad grabbed my head and forced me to look at the mirror in the hallway, the same words were written on all the plugs, 'Bradley Hunkston', a weird name but that wasn't what mattered right now.
"...and the balloon would work like a normal balloon in anyone but the person who's names on it, except also blowing you up but if you use it like you did, you become nothing more than a human sex doll" Brad pulled out the plug from Ryan's mouth, smiling wickedly as Ryan grew until his body muscles couldn't bend and he was stood like a toy soldier in Brad's room.
Brad put the plug back in Ryan's mouth then picked up the surprisingly light sex doll, another effect of the balloon, in anyone else's arms, he'd weight a ton but in his master's arms, he was as light as a feather...or a sex doll.
Brad lay Ryan on his stomach then straddled his muscular figure, the muscles worked the second their master sat down, pushing him into Ryan's ass with a force that should have broken bone but did nothing to either of them, Ryan's body then milked Brad of all his cum before releasing him.
Brad flipped Ryan onto his back then placed a kiss inside his stiff 'o' shaped mouth then lay on Ryan's muscular chest and got comfy.
"Ryan, hold me in your arms" Ryan's body listened to Brad against his will, somehow wrapping his arms that should be impossible to move around Brad's body, the 8'3 quarterback easily lay in the 17'2 sex dolls massive frame.
Ryan couldn't believe the size of his body but Brad was rich and his bedroom was about 20 feet tall, obviously designed knowing something like this would happen, the bed and doorway were way bigger that an average sized house would have but Brad was rich so it was no surprise.
"Tomorrow, we will have a talk about your new life, your food, your room, your chores and your privileges and rewards but also you punishments but for now...sleep"
Ryan found himself unable to resist as he fell into a deep slumber.