Mason huffed as he tried to calm down. Jeff had no right to do that to him, just because he still wore diapers didn't mean he wasn't big.
He was oblivious as to what else Jeff had changed about him as he reached down and readjusted his diaper seat, still wet from the accident he had had when Jeff regressed him. He had plenty of accidents without having to become a toddler again.
In truth, Jeff had made it so Mason had always worn diapers, but this time made sure he was oblivious to the change. Mason still wondered what Jeff meant when he suggested he should think about something while he was gone, and looked down just to double check, seeing nothing wrong with the extremely puffy diaper he now wore. From his perspective, he believed he had always worn diapers, but that didn't mean he wanted to be a baby.
The teenage boy pouted as he felt his stomach rumble again. He dropped into a squat like it was the most normal thing to do and started to push, not thinking anything of it. Suddenly Jeff re-entered with a bottle of soda, "You feelin' better...?" He asked, his eyes widening as he saw Mason grunt as he messed himself.
"Ugh, yeah, no thanks to you." Mason grumbled as the seat of his diaper began to expand and droop, a foul smell filling the air. Jeff gagged and chuckled in disbelief, "Dude, are you... pooping yourself?" He asked in amazement, while Mason continued to push, only sighing when he felt himself emptied out and grinning. By now his diaper was pretty obviously full, he didn't seem to mind however. "Yeah? You know I always go in my diapers?" Mason gave a confused look. Jeff stifled giggles and returned to his computer, trying not to breath in the stink coming from the back of his friend's diaper. "Alright, alright, whatever." He opened the program again, "Now... What should we do?"
Mason grimaced, "Just as long as it doesn't involve transforming ME again." He rolled his eyes as he stuck his thumb in his mouth and began to suck on it, making it even harder for Jeff to contain his giggles at his friend's obliviousness.