While Ty flexed, and checked out his new cock, he decided to try and add some more muscle. Sure, 250 was a substantial weight to be, and he had worked hard for it, but now he could add as much muscle as he wanted... instantly! "How much should I add though... I don't want to be too big... do I?"
Ty sat on his bed and thought about it. 300 pounds... 350... 400... more? His massive prick got hard thinking about it. He had made up his mind. "I wish I would gain 150 pounds of muscle." He waited, looking down at his body, and felt a tingle spread across it. Before his eyes, his pecs swelled out like bread dough. He saw his thighs thicken and define further. He felt his muscular ass grow bulkier in his tattered boxer briefs. His already bodybuilder level physique grew thicker and heavier. Solid muscle poured in to his body all over.
He laughed to himself as his body grew more and more muscular. He stands and walks to the mirror, guiding his big thighs around each other. His legs were getting pushed apart by... themselves. He looked at his hulking frame as his lats push his swollen arms upward, and his neck thickens between his bulging trap muscles. "I'm gonna be a muscle monster!"he chuckled. His huge ass began to tear the last shreds of his underwear off. He watched his muscles swell as he got hard as a rock.
"I still can't believe I can do this!" He flexed his arms. They were as big as most guys waists. His quads were like tree trunks. Even his abs were gowing. He laughed to himself as the swelling stopped. He cupped his new pecs and rubbed his new biceps. He looked at his scale in the corner and stepped on. 400 pounds exactly. Time to get ready for the day.
Ty took a quick shower. He had to keep the doors open because his body was too big to fit in the stall. He jacked off twice in there. He got out and cleaned off. He went back to his room and tried to find some clothes. None of his underwear fit, but he found a string thong that he was given as a gift. It could barely contain his big cock and balls now. He searched for pants now. Nothing. He eventually found a pair of surf shorts that were pretty baggy. Well, they had been when he was still 250. Now they hugged every curve of his ass and thighs, and they barely zipped over his bulge. He found a shirt that he hoped would fit. No luck there, so he left it unbuttoned. His family was out for the day, so he decided to go out too, but where?