My washer wasn’t draining, so I did the thing my brain was telling me was a very bad idea, and I pulled the drain to see what would happen. What happened was exactly what one would expect when you open a drain on something that is holding water. I stood there watching water gush out onto my floor paralyzed by thoughts of how I was going to clean this up. The happy ending is that the flood spat out all the cat hair that had been clogging it for so long. Cleaning up wasn’t fun though.