"We gotta tell Matthew about this!' Ryan exclaimed! He rushed over to his phone and texted Matthew to come over ASAP.
Ten minutes later, with Ryan back to his normal height to surprise him, Matthew walked in.
At the same age as the boys, Matthew had started puberty early. His voice was already deeper and he stood 5'5", normally 5 inches taller than the boys. That was about to change.
Jim asked "Are you ready to become the perfect man?" Matthew replied "Well, I would like that, but what is this about?"
"You're about to find out"
Jim then said "Control Matthew's age, height, muscle size, cock size, and ball size." and took a deep breath
FWOOOOOF
Matthew groaned as his now 5'10" 12 year old body experienced a growth spurt in just a few seconds. His muscles grew a big, his shoulders widened, and his cock and balls now were on the upper side of average.
FWOOOOF
This time, the floor creaked as Matthew, now a 6'5" 14 year old, experienced ballooning muscle growth. His pecs stuck out half a foot and his cock was now a nice 10 inches soft!
"Hmm, maybe another breath?" Jim wondered...