Ryan stuck his nose in the carpet, doing a push up over it as his nose started to tingle and grow. Then he did a face-plant in the carpet as he overbalanced on his oversized feet.
Ryan pushed himself back up, feeling his face, realizing the now had a huge head in proportion to the rest of his body, and a huge nose even in comparison to that. His brain, now enlarged relative to the rest of him, raced, and he realized that the carpet enlarged and shrunk things relative to the weight that was rested on the individual squares. His whole weight enlarged all of him, and ditto with shrinking, while a portion did a portion.
His dick, tiny though it was, got incredibly hard at the thought, and Ryan also realized that, when fully hard, his dick had to be long enough to actually contact the carpet, otherwise it couldn't have shrunk to it's current size. Only when it shriveled up with thoughts of being tiny forever was it too short to reach.
He stepped onto the growth square, letting his full weight rest on it until he was something over ten feet tall. His tiny hard-on raged, but he was tall enough that he could do a push up across the corner of the carpet and have his dick touch the black square.
It started to grow with an electrifying feeling, slowly at first, but finally growing to 1 foot, 2 feet, 3 feet....
Ryan pushed himself up, standing there with a three and a half foot cock, which would have drug the floor if he weren't ten feet tall. He couldn't even get both hands around it, it was so huge.
But he could fix the hands. He tucked his cock back between his knees so it didn't dangle on the car as he leaned over and rested his hands on the carpet. They began to grow, larger and larger, and then Ryan realized he was putting some of weight of his arms onto the carpet as well, and they were enlarging as well, and then the pressure pushed back enough that some of the growth went into his shoulders until he was finally standing upright, then doing a slight hand-stand as he straighted his arms and lifted his legs off the ground, dangling over the black square as the whole of his started to grow again.
Then he heard a rumbling and he realized that his earlier giant growth had weakened the architectural supports of the upstairs floor and it was starting to collapse.
He sprinted as fast as his giant legs and monkey arms could take him, ducking down and out the main doors as the ceiling collapsed behind him, burying the black and white carpet.
Ryan stood in the hall and took stock of himself. He was hunched over under what had been a ten foot Victorian ceiling, so he judged he was about fourteen feet tall, with arms that dragged the ground, hands to match, and feet twice as big as they should be, plus shoulders almost the width of the corridor and a huge head with a giant nose.
Damn he was a freak now!