Ty made a silent wish and the growing stopped. He moved cautiously through the store so he didn't crush his larger package. He wandered over to Dustin "Fine, you want to play hard-ball Dustin? We will then!" He said to his brother. "If you aren't growing your dick from this moment on, it is going to shrink." He said a bit angrily. Dustin kind of grinned a bit "Good, I should be able to get it to the exact size that I want before I get to the end of the mall." Ty shook his head "Not only that, but as your dick shrinks you will get fatter. That, and I'm setting a spell on myself. If your dick goes under a certain size, it will be at whatever size it stops forever. If you gain a certain ammount of weight, I will never be able to reverse it." Dustin began to look nervous. "So, who knows maybe you'll get so fat that your body will swallow up your dick!"
Ty wasn't telling Dustin everything though. He set the number of inches that Dustin would need to lose to 1 and the ammount of weight to gain to 1 pound. Dustin could only get fatter and shrink his dick that way! "Go!" Ty said as Dustin began his trek through the mall. It started off well enough for Dustin as a group of girls passed by him, furthering the growth of his 25 inch bulge another 2 inches, but then luck ran out. Men seemed to flood the mall, not surprisingly being in the menswear sector. He felt the inches slump somewhat as 27 became 26, but he didn't notice any weight. He looked around desperately for a girl, but there were none to be seen. Another inch dropped and another few pounds added. Then it happened, though unknown to him, Dustin's dick became 24 inches. It would no longer grow, only shrink.
Ty got pleasure in watching this spectacle. Dustin stared around looknig for a girl, but they were nowhere in sight. He had become noticibly larger, gaining around 10 pounds per inch. He was now at 200 pounds, his abs becoming soft as his dick shrank all the more. 22 inches came with another 10 pounds as Dustin wormed his way through the mall, followed by 21, 20, and 19. 240 pounds was hard to maneuver through the crowded stores. At 18 inches and 250 pounds, he spotted another girl and concentrated on her. Try as he might, his dick wouldn't grow and his fat wouldn't drop. The realization came over him as his clothes tightened about his portly frame. He began to run as fast as his slowly inflating body would allow him. 17 and 260, 16 and 280, 15 and 290, 14 and 300 pounds. All this before he passed the food court. "Oh god, my dick is going to be gone before I get to the end of the mall!" He thought.
Ty watched his now 310 pound foster brother waddling through the crowded mall, his clothes tightening around him as he sagged and bounced with fat. His huge stomach drooped over his bicycle shorts and swayed as he ran. 12 inches and 320, 11 inches and 330, 10 inches and 340. He was nearly to the end, maybe he could salvage some of his body! Until he tripped. Dustin's thighs were not used to such close contact and he fell to the floor with a rumbling thud. No one in the mall noticed him, as per Ty's wish. He struggled on the floor to lift his 350 pounds up, but to no avail. 8 and 360, 7 and 370, 6 and 380. Soon he was up and plodding his way toward the door. It was nearly impossible to move now. His clothes began to rip as he reached for the door. 4 and 400, 3 and 410, 2 and 420, 1 and 430 as he passed through the door, slowing the shrink down as it hit a half inch and 435 pounds.
And then, they were home. Dustin looked down over his body in an attempt to see his cock, but it was no use. His bulbous stomach blocked his view. Ty wished to see his new stats on a mirror to show Dustin. 435 pounds, his dick when flaccid had been a half inch but was swallowed by his fat covered groin. A whopping 0 inches flaccid, even more dismal was his erection that sans fat would be around an inch and a quarter... with his new girth it was less than an eigth of an inch. Dustin looked at himself in the mirror. He bulged and bounced with every step and every breath. "Change me back, Ty. Please!?" He said. "I can't, Dustin. I wished that I could never change you back, remember?"
"Looks like the only basketball you'll be playing from now on is on the nintendo." Ty said "And forget sex. You're too fat to whack off I'd say.... but you need some kind of pleasure, don't you?" Ty thought a moment "Okay, from now on you will only have relationships with guys. They will not want sex from you, but they will get extreme arousal from feeding you, and that's what will get you off."
Dustin looked at the mirror "So... I can only cum from getting fatter?" He asked. Ty nodded "That's how it is from now on, Dustin. Like it or not, I can't help you anymore."