Before Jake could though, his stomach started to feel heavy and he grimaced. "...Poop." He muttered, not sure why, but knowing that was what he had to do. "G-Gotta poop..."
The pacifier dropped from his mouth as his jaw dropped. This couldn't be happening. He looked around desperately, the feeling getting worse by the second. He had to find a bathroom. He darted back into the hall, trying to find a restroom. "Need t-to find a bathroom... gotta go potty..." He grunted, each time he found himself saying something childish but was unable to help it. Whatever he wanted to say, it came out different than how he wanted, it seemed like it got automatically censored. He groaned, "G-Gotta go poopy..."
Suddenly he felt a lump enter into the seat of his diaper and his blood ran cold. Warm mush was starting to fill it, the unbearable feeling in his gut getting worse. He moaned in disgust and humiliation, automatically adopting a squatting position, "Gotta POOPIE!" He yelled, louder than he had wanted to, as more mud flooded his diaper, causing it to expand and droop. Unconsciously, Jake found himself sticking his thumb in his mouth and beginning to suckle as he could no longer bear the pressure and just shit himself then and there, but the feeling of relief was amazing. His belly stopped hurting. His eyes fluttered and he panted, standing up as the pain ceased, but cringing as he felt the warm mess in the seat of his pants.
Jake gulped, waddling to a mirror in the hallway to see the expanded seat of his diaper, each step causing the mess to squish against his bottom, it was gross, yet oddly he found himself becoming increasingly used to it.
Here he was, a big baby himself, no different from his brother. He looked at how childish he now was, even having pooped his diaper like a baby too. He glared back down at the camera, knowing this was all this thing's fault. With the dirty, stinking diaper he now had on, he strongly considered taking another picture, hopeful that the results would be better than this.