Following Cody upstairs, Jim kept picturing what he'd seen in his mind. Cody looked like he was 16, was massively hung, very muscular... it was a dream. Jim wondered... could he be made bigger? This time he decided to focus specifically on Cody's height.
Well... he thought, looking down at the balloon. "Control Cody's height" Jim whispered to it, and then pocketed it, walking upstairs to find Cody.
Pushing the door open to Cody's room, Jim found him staring at the mirror. "Jim, look! I swear I wasn't this muscular this morning!" Cody exclaimed. Acting innocently, Jim shrugged and said "You're really just noticing now?".
Stunned that he was apparently normally like this, Cody was so preoccupied with the mirror that he didn't notice Jim discreetly pull the balloon out of his pocket and blow into it. Jim's eyes widened as he saw Cody's legs seem to stretch, as his head seemed to jump up a couple inches. Cody was now over six feet tall!
Discreetly Jim began to blow a big breath into the balloon and once again Cody's head began to inch upwards taller. His t-shirt was now riding high on his chest and exposing a few inches of his skin underneath, while his shorts now looked incredibly short on his long legs. Cody noticed this time and said "Jim stand up!". Pretending to not notice, Jim stood next to Cody. He had to look way up to see Cody's head now! Cody looked down at Jim worriedly. "Jim, how tall are you?". "4'10, why?" Jim replied. "I think I'm growing taller now" Cody said with a frown. He quickly left the room, and Jim noted his head came awfully close to the door frame. That meant he had to be close to 6'8"!
As soon as he was gone, Jim took the balloon out from behind his back and began to slowly blow into it again. He couldn't see what was happening to Cody, but he could imagine. He took another breath and blew into the balloon one more time for good measure. Then he whispered "release" and tucked the balloon in his back pocket.
After a minute, Jim was about to go search for Cody but then he heard him in the hall. His footsteps sounded a little heavier. Then as he watched, Cody ducked his head in with an even more worried expression, "I grew again!".
Jim marvelled as Cody stepped in and was able to stand up fully again. Now his head was closing in on the ceiling! Cody slowly unravelled the tape measure next to his head and Jim watched as Cody reeled it out past five feet, his old height. Past six feet... past seven feet, until the tape measure stopped at 7'4". Both Jim's and Cody's mouths dropped open.