Keep an eye on your wife. Mine was cutting her hair recently and made a huge pile of hair in the bathroom sink. I asked if she was planning on putting that hair down the drain. She said, "no, of course not. The drain is closed."
So I just said to make sure it goes in the trash. Guess what? It went down the toilet instead.
Women don't seem to understand that there are pipes underneath the fixtures. This was a huge pile of hair. No doubt a clog coming soon.