Eric had one foot out the door when he remembered the game. His best friend Jake had leant him the new COD and he was dying to play it. Quickly, he got himself some chips and sat down with the game.
Unbeknownst to Eric, as he munched away with one hand on the controller, he was changing. The band was giving of a subtle heat as it aged him up. Eric was sitting still and the band took this into account. As opposed to just aging deeper into the grasps of puberty, Eric was getting fatter.
As he sat on the couch, Eric's body began to stretch, taking him from about 5'2 to 5'6. Hair began to appear, a bit more obviously, on his body. The little hair on his legs thickened and a trail began to form from his navel into his boxers. His armpits found themselves coated in hair. Eric's voice dropped. Amidst all this, the weight was piling on.
Eric had always been skinny, so the first few pounds weren't all that noticeable. They simply filled out his frame. But then, his belly began to round out and his features softened. His belly grew and grew, and eventually, the soft mass overtook the waistband of his pants. It rolled over his sweats and kept going until it met his thighs. His belly spilled out of his pants, giving him a pair of live handles. Eric's chest began to fill out, too. At first, not to apparent, but after a couple minutes, he had a full blown set of moobs. His legs beefed up and his arms thickened. His face rounded out, giving him soft puffy cheeks and almost a double chin.
Finally, once the hour was almost up, Eric's hair changed from his former, short buzz cut into a longer, more adolescent, maybe even Beiber-esque, style. His clothes morphed into a pair of jeans and a loose tshirt. As he hit fifteen, he stood up, and walked back into the kitchen.