“Beginning phase two” echoed through the room.
“Ohh, yes!” moaned Charlie in anticipation. Both watched the machine. More of the amber liquid was starting to flow through from its unseen source. As it flowed out from the back wall, split at the valve, and inexorably approached the red tank, it was watched intently. But just as it got there, it went unobserved. Both boys were staring at Charlie's body.
He was breathing deeply, trying to keep control. With each inhalation his chest reached farther than the last, and on exhalation it never returned to where it had come from. Lee also couldn't help but notice the bulge in Charlie's tight shorts, which was getting more and more prominent – though from erection or genuine growth he couldn't tell. It wasn't long before Charlie surpassed his previous size peak.
Lee watched Charlie stroke his biceps, his hand getting gradually pushed farther and farther away. Charlie groaned, then struck a double biceps. His straining sleeves gave in and burst. “Aww yeah, did you see that? I fucking burst out of my shirt.”
“Well, your sleeves.” corrected Lee, a stickler for accuracy to a fault. Charlie took that as a challenge, and hit a most muscular. Small rips formed under hit pits, but that was all. He tried again, and the rips widened. Then he paused, staring back at Lee, as he slowly rose further and further above him. After what could have been a few seconds or an eternity, Charlie hit a most muscular for a third time, his shirt shredded and the tatters fell off.
Lee gaped at Charlie's newly-exposed abs. They were like cobblestones. Charlie must have seen him looking, because he put his hands behind his head and went into an ab & quad pose. Ironically, this pose drew Lee's attention away from his abs, and to the jean shorts that just burst their seams. The waistband survived, but the legs had been ruined. “Well, there's not much point in these” chuckled Charlie, and he reached down one massive hand and tore the remnants off.
This exposed his pouch briefs, and the prominent bulge Lee had noticed earlier – though it was even more prominent now, of course. The briefs did little to hide the mango-sized balls and eight inch tube that was clearly not all the way hard. It looked like the briefs would soon go the way of Charlie's T-shirt and shorts, but just then there was a click and both boys turned to see the pump being draining water from Charlie's tank into Lee's.
Lee grinned up at Charlie, who now stood half-again as much taller than Lee than he had been, and that despite Lee's growth in height. “Please sir, can I have some of that?”
Charlie smiled. “Well, I suppose. . .” Both were in a good mood, and actually getting along. This was almost as miraculous as the growth.
Lee reveled in the sensation of growth. To feel oneself expanding, getting more powerful. It was heady. But Lee made sure to keep an eye on Charlie, who didn't let the fact that he was shrinking prevent him from stroking his taut muscles. By the time Lee's growth had stopped, he was almost average size – a huge improvement for him. And, he was relieved to note, Charlie didn't seem to have notice that he just shrank twice as much as he had last time.