Don't lock Muffin in a room

Or he will make sure you will never do it again.
This morning around 7am the cats started to make noise and waking us up. Their usual routine :)
To spare Wolfram's sleep I locked each cat in a room to get some peace.
This turned out to be a bad idea.
Muffin really didn't like it and peed on the blanket, on my clothes lying there. Once I discovered the damage i quickly removed everything and started washing.
What I had missed was that he had done far worse in the box containing Wolfram's clothes. Oups that was not a good thing to do, Muffin.
Conclusion of this story don't lock Muffin or he will make sure your clothes remind you everyday how evil you've been.