Ooh! Mikey felt a cold tingle over his body. What was that? he thought, before his clothes started to feel tight. Slowly he began to age up, growing taller and his facial features becoming just slightly older.
As Michael crossed the age 11, puberty started to appear. Quickly, Michael began to gain height, passing 5 feet tall and growing when he finally slowed down. Turned out that he had pressed the multiply and 2 buttons and he had aged himself to twice his previous age, 14. Dazed, the now-14 Michael stood around 5'6" in clothes that were much too small for him. His shirt looked like a joke on him and would almost certainly rip if he tried to remove it or grew any more. The same was true for his pants, which had ripped and fallen off leaving him in Spider man underwear that was struggling to contain his growing member.
Looking at the remote, he noticed another button for reality-shift. He pressed it and his shirt immediately grew to fit him, changing from a childish Spiderman shirt to a more appropriate plain T-shirt. His underwear shifted to a larger size with more room in the front, becoming plain white briefs, and his pants mended and formed jeans, now in his size. His hair reshaped to a more age-appropriate size as well.
Suddenly, Michael's mind felt different as he underwent a mental aging as well. His knowledge and processing became normal for a 14 year old's, and he was able to think and speak like one. "Coooooool" he said, looking up and down at the remote.