Jeff had to sit and wait while the workers got the diapers put in. He knew what was going to happen, and was unable to stop it, but at least it was better than what is currently going on.
As he was sitting there, one of the employees were walking over to pick up the girl wearing him. This just made it worse; While holding her, she was putting more pressure on the diaper, resulting in the poop getting it more smeared on both Jeff and the girl.
Luckily, he didn't have much longer; The girl was set down on the changing table, ready to be changed. Jeff watched as the employee grabbed a diaper, and set it down next to the girl. Then, she untaped Jeff, balling him up and placing him on the table to dispose of after. This gave him a good view of the employee and the girl during the change. She then lifted the girl's legs, wiping her butt and slit off before sliding the other diaper under, then proceeding to apply baby powder. His view of the girl's privates was then blocked by the employee lifting the front of the diaper, finishing the change.
Before she can throw Jeff in the pail, however, she gets called away for something. Probably work related, Jeff guesses. Jeff is now alone on the changing table, as a dirty diaper, with a young girl. This should end well...