"Doubles!" Adam cried out. "That means I get to roll again after this turn!"
Julian frowned, still flexing his new muscles. "Says who? This isn't Monopoly!"
"Just let him do it," Ian shrugged, his huge body lounging on the floor. "Who says it won't be worth it?"
Smiling, Adam moved his piece the allotted number of spaces, landing on another red square.
"All right! Maybe I'll get even bigger than YOU!" Adam exclaimed as he poked Ian in the chest.
"Well," Ian said, furrowing his brow, "maybe you will. Just remember that I get to go after you."
Adam flipped over the card, and just like with Ian's turn, the word height and a picture of dice appeared on it. "Here we go!" Adam called out as he shook the dice and threw them again. They landed, showing a 4.
"Awww," Adam said, somewhat disappointed. "Oh well, at least I -- Whoa!"
He let out that yell as his skin started to stretch across his increasing frame. Adam's body began to enlarge, the muscles and bones stretching out as he inched up. His t-shirt tries to stretch out to cover his torso, and his shorts filled in nicely, but after a few seconds, the sound of the fabric ripping filled the air.
"Oh, YEAH!" Adam closed his eyes and reveled in his growth, perhaps a bit too much. "Bigger!" Ian and Julian exchanged looks, each made a little uncomfortable by Adam's weird reaction.
Adam continued to get taller, his shirt ripping down the sides and the seams in his shorts starting to tear, the shreds in his clothes exposing his skin. Finally, his growth had stopped, Adam now almost exactly between Julian's height and Ian's, still as skinny as ever.
"Damn," Adam said, opening his eyes again and looking down at his body. "I wish I could've grown a lot more... But I have another turn coming!"
He reached out his larger hands and grabbed the dice, rolling them again. He moved his piece, landing on a purple square.
"Purple?" Adam asked, his eyes lighting up. "What does that stand for?"
Julian rolled his eyes. "Flip the over and find out!"
Adam obliged. The text that appeared read 'Body Part.'
"'Body Part?'" Ian scratched his head. "What the hell?"
"Do I roll a dice, or...?" Adam wondered.
"Look!" Julian pointed.
A button had appeared on the board along with a black panel. The panel started to light up, 2 sets of numbers flashing and changing at a near-instantaneous rate.
"Wow!" Ian sat up a little. "This game keeps on getting more and more interesting. I guess you're supposed to--"
Not letting Ian answer, Adam slammed his big hand down on the button, shaking the board and nearly sending the pieces flying off of it. The numbers stopped, both "5" and "3" flashing. Turning to the card, the boys saw words appear on it, reading: "Your manhood's length will multiply by five and its girth will triple."
"My manhood? Does that mean my-- Ohhhhhh!"
Adam's words were cut off by a sense of euphoric pleasure surging through his body, concentrating in his cock. His friends grew wide-eyed as the crotch of already-tight shorts began to bulge, being forced outward by an incredible force.
RIIIIIIIPPPPPPPPPPPP
The monster beast inside Adam's shorts burst forth, pulsating and heaving forth. It had a sense of power and impressiveness, already 10 inches long while flaccid. Its thickness was also increasing along with its length, becoming like a huge python that snaked down Adam's thigh.
"Holy shit!" Ian cried out. "Adam, that's huge!"
Adam wasn't listening. His hands were rubbing up and down the exposed part of his chest, closing his eyes and tweaking his nipples. This caused the still-growing member to come alive, quickly hardening as Adam became more and more aroused.
Eventually, this too came to an end, Adam's rock-hard cock now as thick as his arm and nearly as long. The other boys watched, a little uneasy but also a little turned-on, as Adam leaned his head back and moved his hand down, wrapping his fist around the base of the shaft, unable to fully close his fingers around it.
"Uh, Adam?" Julian asked, shifting his jeans and aware of the increasing tightness in his own crotch, "What are ya doing?"
Adam opened his eyes and tilted his head up, looking Julian in the eye with a devilish smile on his face.