>>112500432He could get clogged and have a sick day episode.
There could be one of those super advanced Japanese toilets that is also inexplicably a horse replace him.
You could have his family come over and see that they are also based on home fixtures.
Have him go to the store to buy wetwipes and hand sanitizer to make sure people clean their hands after they use him.
Aliens could abduct him.
India episode where he feels extremely neglected because they shit in designated streets instead of him.
A criminal decides to flush evidence down him.
Mystery of the upper decker