Looking around the store with his balloon in hand, Jim wondered how else he could mess with someone. Suddenly he spied another victim - over in the shoe section, a younger boy (Jim estimated around 10) was trying on some shoes. Jim hurried over and ducked behind a shelf. He quickly inflated the balloon and whispered "control awareness of transformation" and deflated it fully. Then, taking a deep breath, he whispered "Control that boy's age and size". Looking around the corner, Jim focused on the boy and blew into the balloon.
The effect was immediate, as the boy suddenly sprouted up a few inches in height, gaining some mass around his body and a few months of age. He still looked to be a prepubescent boy, though he looked to be slightly taller than average now.
Taking in a deeper breath, Jim blew again into the balloon. This time the effect was much more pronounced. The boy shot up almost a foot, now standing at Jim's height! He looked to still be around 11 however, and Jim guessed this was because he had paired age with size. Even if the boy was still only 11, he looked to be on the edge of a major growth spurt. Jim noted that the boy's feet and hands were bigger than his own! Taking a deep breath, Jim blew into the balloon one more time.
The boy stretched upwards again, settling in at a whopping six feet tall. Jim had underestimated the power of not just pairing the size and age attributes, but also the accelerated puberty that he was creating. The boy's muscles were also clearly visible now, as he looked like an athlete, albeit still a middle school one. He had to be one of the tallest 12 year olds out there! "Release" Jim whispered.
Just then, a salesperson came up the boy. Jim couldn't hear what they were saying, but from their conversation it was evident that she didn't notice the boy's sudden growth. He sneaked closer so he could listen to their conversation.
"... new shoes, I've outgrown my old ones..." the boy was explaining his need for the shoes. Jim was slightly surprised to hear that although he had grown the boy to be much taller, his voice was still high like a 12 year olds. Jim mulled about this for a moment before quite literally realizing the ability to change this was in his grasp. "Control the size of that boy's adam's apple" he whispered. Then he began to slowly blow into the balloon, careful this time not to blow too quickly. He continued listening as he blew.
"...do you have any recommendaTIONs" the boy stopped mid-sentence as his voice broke, then shook it off and kept going. Jim could see a slight ball showing in the boy's neck where there hadn't been one before. He kept blowing.
"I was lOOKing over at the sTYLE of shoes over THERE", the boy's voice broke more and more. He blushed, and cleared his throat. Jim, not wanting to wait any longer, blew a full breath more into the balloon and pinched it shut.
"So as I was saying..." the boy continued on and Jim almost audibly gasped as he heard the boy's voice abruptly drop an octave. It now sounded like the older 14 and 15 year olds at school!