That could be true. In which case he probably deserves a little credit. We gave him lots of shit about being ok with shitting his pants. For me at least, it was not the actual shitting which was ridiculous. That is an actual medical problem, so I didn't laugh at it. It was the fact that he had this embarassing condition and he refused to use any of the solutions available to him. If he is using one now, it moves his shitting his pants from a ridiculous aspect of Chris to a medical condition he is dealing with.
But I am not convinced. The enemas could be anything. Barb is an old lady and has taken various medications for various things. One of these medications could have been rectal. It could be some sort of manifestation of Chris' interest in rectal penetration.
Hell, we don't even know there are enemas in the box. They moved recently, are getting ready for another move, and have lots of crap. People in that position have a lot of boxes, sometimes just taken from other people or stores.
Also Barb is a hoarder. One of the main things that makes someone a hoarder is that when you look at their crap, they don't have a good reason for having the stuff they have. They just acquire stuff in the hopes that it might be useful one day, without any particular reason to think it will be.