Jayden yanked down his shorts and pulled off his shirt. He waddled over to his full-length mirror and looked himself over. There he was, a still-growing, obscenely-large cock protruding from his boyish groin. Everywhere else on his body, he looked like the same old Jayden: flat stomach and chest, face free from acne, and tousled brown hair. But down there, he was a beast, and an unwilling beast at that.
He waddled to his bed and sat down, breathing heavily as his cock continued growing, bit by bit. He laid back on his bed, defeated, wondering how he was going to live like this. He gasped and sat up when he heard his doorknob jiggle.
"Jayden?" came the voice of his little brother, Eric, from the other side. "Can you come and play with me?"
Jayden cursed himself for not locking the door. He tried to stop him - "Wait! Don't come in!" - but to no avail. He watched as his door swung open and his eight-year-old brother Eric strode into the room.
"I'm bored! Can we-" Eric stopped dead when he saw the still-expanding schlong jutting out from his big brother's crotch. "Jay, what's going on?"
"Shut the door, first of all," Jayden demanded. Eric closed the door, and by the time he turned back around, his brother's cock had lengthened slightly more.
"Second of all," Jayden began, "I have no clue what's going on! It just started growing while we were at the mall! And it's still growing!" Then Jayden glanced back at his cock and saw that, finally, his dick had ceased expanding. Still, it now reached at least 20 inches long.
"Oh thank God, it stopped," he sighed. "But now what am I gonna do?"
Eric had stood silently throughout his brother's explanation, and he kept staring dumbfounded at Jayden's dick.
"Jay, this is so cool!" Eric finally said.
"Cool?! How?!"
"It's huge! I wish mine was this big! I've seen dad's in the bathroom sometimes, but this is way bigger than his!"
Jayden rolled his eyes and instinctively looked down at Eric's crotch. His eyes widened. "Might want to check yourself out," he sighed again.
Eric raised an eyebrow and looked down to see a sausage-shaped outline bulging out of the front of his shorts, pushing further and further forward. His smile returned even bigger.
"I'm growing," Eric said. "Like you, Jay!" He pulled down his shorts as his pre-pubescent cock grew. Soon it was eight inches long, and still going.