Timmy thought the world of Jamie. He was his big, strong brother who was always nice and took care of him. He wasn't nearly as big as the other boys his age but to Timmy, Jamie was his father figure and he saw him as the perfect man. Jamie was Superman. One day in the park Timmy had seen his friend Josh with his dad. Josh’s dad was a professional bodybuilder and was really ripped. He was at the park flexing for his son’s friends and letting them hang from his bulging biceps. Timmy had simply said, “My brother’s just as strong.” Everyone laughed at that and Josh had sneered at Timmy. But he had no idea what was so funny because to his young eyes this was completely true.
So when Timmy was woken up one night because of a yell, he quickly got out of bed and wandered over to the bathroom where the light was on, his whole world changed. There was his big strong brother only in his boxers with light hair on his body and face. Timmy didn’t know where this hair had come from, whenever Jamie bathed him he would wash himself as well, so Timmy had seen Jamie nude before. Then Timmy saw something even more amazing. Jamie started to grow.
He slowly got taller, but what were more noticeable were his inflating muscles. His calves became firm and swelled out to the size of softballs and his quads began filling with pounds of muscle. They quickly became perfectly defined and formed a teardrop shape at the knees. His back and shoulders widened, and his lats bulged out giving Jamie the sexy v-shape. They pushed up his thickening arms which crisscrossed with veins. His biceps passed twenty inches and Jamie couldn’t help but flex them. The massive muscles balled up and became hard as steel. He stared as they continued to grow bigger. If he had been Superman before he was now becoming the Hulk.
Timmy’s eyes grew huge as Jamie’s pecs expanded outwards, forming enormous slabs of meat and creating a deep groove between them. His shoulders were the size of his head and his corded neck was bigger than his original waist size. An impressive 8-pack was forming below his massive pecs, pushing against each other. Thick veins grew along his arms, shoulders, pecs and could be seen trailing down into his boxers.
Timmy’s mouth gaped as he caught sight of Jamie’s boxers, which were now straining with the size of his tree trunk quads and the huge bulge in front. They were riding up on his longer legs and quickly seeming more like a thong, exposing his solid muscled ass. There was the slightest ripping sound and they vanished, flung away from the muscle jock by the elastic. Jamie’s incredible cock now flounced free, dangling at a massive 8 inches while his grapefruit nuts were being supported by his massive thighs.
Jamie had shot up to six and a half feet and Timmy was now craning his neck to view his muscle god of a brother. Suddenly the growth stopped and Jamie blinked his eyes several times. He looked himself up and down in the mirror and grinned. He flexed every muscle in a most muscular pose and Timmy was awed by the way his body bulged with size. Veins exploded all over Jamie’s studly body. The big dick between his beastly thighs twitched and began to rise. He placed a baseball glove sized hand on it and began to massage the sensitive tip when he noticed Timmy for the first time.
He was so shocked that his engorged penis actually went flaccid. “Timmy, what are you doing out of bed?” He asked as though everything was normal, despite the incredibly obvious.
Timmy smiled and ignored the question. “You’re so big.” He stepped forward and Jamie seemed to loom larger as he approached. “How’d it happen?” He reached out a tiny hand and placed it on Jamie’s calf, it looked like a pumpkin compared to Timmy’s fingers.
Jamie pulled his leg away. “I don’t know,” he lied. He really hadn’t thought about what this pill would do to his home life.
But Timmy was more concerned that he had pulled away. “Can’t I feel your muscles? Josh’s dad always lets us feel his.”
Jamie reluctantly agreed. He definitely wasn’t used to his body getting this much attention. Timmy reach out with both hands now and began feeling the lower part of his quads, which was as high as he could reach. “Are you bigger than Josh’s dad now?”
“I don’t know I’ve never met Josh’s dad.” Jamie tried to sound calm but this was all very sudden. He tried to think but Timmy’s hands were distracting him.
“Wow you’ve got a really big peepee.” Timmy said, now standing between the two columns that were Jamie’s legs and looking up. Jamie flushed completely red. He decided Timmy should go back to bed. “But it was bigger before. Why was that?”
“I’ll tell you later. Now you need to go to bed.”
“Okay.” Timmy said in a very sad voice. Jamie bent down and placed a hand on Timmy that was as big as his younger brother’s back and nudged him to his room.
“Jamie, will you protect me from monsters?”
“Sure.”
Timmy retreated into his room. “I’m glad you’re my brother and I’m glad you’re so big.”
Jamie waited until he was absolutely sure Timmy was asleep then crept downstairs to finally explore his new rock hard physique. He had slept nude on top of his covers with a 15 inch boner staring at him for an hour. He dared not move or have to explain things to Timmy.
The jocks at school didn’t come near close to his size, and he’d seen a few big ones with erections in the locker room.
He looked himself over in another mirror and hit pose after pose. Each one making him hornier and hornier. He’d never really thought about girls and he was starting to suspect his sexuality. But with a body like this who cares, he thought.
He finally moved to his cock and used both large hands to stroke the beast. It didn’t take long for him to climax and fire a wad of cum onto the mirror. Oh shit, he thought as he rushed to clean it up before morning.