It occured to you imediately as everything started to grow larger what the buttons meant, and what else could happen to you. You quickly try to run out of the open as you're still shrinking, and nearly trip as your shoes and socks are left behind. You continued to shrink, then another ray flies for you. Luckily, at that moment, you trip over your own oversize pants and fall flat on your face, dodging the ray. Unluckily, when you climb back up and run, you loose both your pants and your underwear.
Still growing younger, you find yourself wandering when it will stop. Running through the maze of the lazer tag arena you find a small hole that your ever shrinking form could easily crawl through, and be out of sight.
You jump down onto the floor and quickly crawl into the hole, though at the last moment, you realize you misjudged the size of the hole, and it was a little smaller than you had hoped, and now your oversized shirt was caught. Sighing, you squirm out of the shirt, and into the hole and find yourself in a small chamber where you could easily shoot out of unseen.
Taking of safety, you decide to look over your body which has now stopped changing. Looking down at yourself, you couldn't be any older than five or six, and had lost all of your clothing. This wasn't what you expected.
Not that you couldn't make do.