I was talking to MomC last night. We were discussing all the issues we're running into the Middle Son and the bathroom. If you leave toilet paper out, he flushes the entire roll down the toilet. If you don't leave it out, he wipes his rear end with towels. If there are no towels, he just uses his fingers. I have a fingernail brush that I use on him several times a day to get poop out from under his nails.
As we were talking, MomC said "wow, your fiancee must REALLY love you if she's willing to come live in the midst of all this."