After cleaning up the pair of ripped underwear and changing into a fresh T-shirt and loose shorts that showed off his new bulge, Jim wondered what else he could change. He loved the constant growth part, but he wanted to try something else.
As he looked around, his eyes fell on an old pair of size 10 basketball shoes that his brother used to own. He had outgrown them a long time ago and hadn't touched them in a long time, but they were still a few sizes too big for Jim, who wore a Size 6. Or were they... "Control how much my feet grow in size per minute" Jim said to the balloon, but didn't blow into it yet. Next, he got the shoes and slipped his feet in. As expected, they were easily dwarfed by the shoes. Smiling, Jim blew a full breath into the balloon and held the neck shut.
Again like the first time, Jim felt nothing at first, but then a weird sensation on his feet. Confused for a moment, he realized that his feet really were growing within the shoes! The feeling was his feet slowly growing across the bottom of the shoe! Almost jumping for joy, he kept the slow growth going.
Suddenly he felt his toes nudge against the shoe's end. Letting the air out of the balloon and stopping the growth, Jim removed the shoes. He now had feet that were the same size as the shoe! Jim's feet looked a little ridiculous on his scrawny body, but Jim didn't care. Putting the shoes back on, he mimicked his brother playing basketball. Now the shoes stayed on perfectly.
In fact... nobody would miss them. Jim tentatively took the balloon and blew a breath into them again. Suddenly, the shoes started to feel a bit tighter. Then tighter. Even tighter. Suddenly Jim's feet started to hurt, the shoes were so tight!
Jim was about to end the growth because his feet hurt so badly, but then he heard it - a tiny rip. Then more rips. Finally, as Jim watched, the whole front seam of the shoe split open, and his foot slowly grew out of the shoe. Jim thought it looked so cool - almost like the shoes were shrinking around his feet.
Trying to lift his feet up, Jim noticed that they felt heavier on his body, almost like wearing flippers. He had to concentrate on picking the end of his feet up, and it was becoming harder as his feet got bigger and bigger. He almost looked like a hobbit now!