Myles, the six-foot womanizer and pretty-boy, was looking radically different. The grey sweatpants he'd worn throughout the night left nothing at all to the imagination any longer, as the seams were visibly strained by his legs and ass. "God damn," one of the twins said. "Myles, I don't remember you packing that much in your front?" Myles looked curiously downwards, at what Gavin had looked at throughout the session - the swelling thighs were pushing out a package of prodigious size, with an obvious outline of a very soft, very thick manhood snaking its way down his thigh. Myles, however, didn't seem too fixated on that area.
He was still swelling with size, falling heavy on the couch as he continued to inflate. His pecs, tight and square, softened slightly and plumped up, growing so much that they didn't look like moobs at all; his arms, tones and athletic, swelled up with muscle, his upper arms eventually settling at a size and roundness that wouldn't seem inappropriate on a soccer ball, his shoulders closing in at beach balls. Meanwhile, his entire frame was shifting to accommodate for the heft, his shoulders broadening with several loud cracks, his hips widening. He even became slightly taller, making the thick belly seem less lazy and more bulky, or solid.
After a few minutes of panting had passed, while his mates were either preoccupied with gazing luftfully at the transformation, gazing lustfully at the pills, or frantically googling "friend turning giant muscles", Myles was marvellously huge, and his pants gave in. Standing up as the transformation subsided, Myles surveyed his new size, standing a head above all the others, and as wide as two of them standing shoulder by shoulder. Now Myles had been an athletic kid, at about 160 lbs of lean mass, but he'd more than doubled in mass, now standing at a 350 lbs weight. His lower body, of course, had adapted, his huge dump truck ass sticking almost a foot out from his back, his thighs wider than the other boys' torsos. And his thunderous legs, of course, were big enough to push his junk foreward.
As he removed the torn shreds that remained of his sweatpants, his underwear was struggling just as much, the seams audibly giving in. The bulge itself, for now contained, was the size of a watermelon. Annoyed with the cramped feeling it gave him, Myles tore it clean off, his cock bouncing down and slapping the sides of his thighs. Gavin, subconciously, fell to his knees, wathcing the monster, thick as a beer can and even longer, pushed slightly up at its fat root by two balls each the size of an orange, pulsing, producing testosterone than quickly sent Myles into an erection.
"Fuck yeah," the twins said. All boys in the room were in various stages of undress, and absolute stage of erection. From Phil's "monster", which turned out to be quite the shower and got to nine inches from his soft eight, to the twins and their identical - of course - six-inchers, to Gavin's dripping five-and-a-half-incher, to Samuel's surprising seven. They were all watching Myles' cock engorge, slowly and majestically, like a monumentous obelisk being erected by crane. When it pointed at a thirty-degree angle from Myles' soft belly, it stopped, but throbbed for a few seconds, still, thickening further, gaining length and girth. Now having a cock a foot- and a half long, and as thick as a grown man's upper arm, Myles groped his muscly milkers and told the others in a sultry, deep voice: "Lick."