I know this post is supposed to be funny, but I was to reply seriously, because I feel there is a carpet of bitter truth underneath this story.
Once I mistakenly lock the cat of my flatmate in my room.
When I came back, she left as big surprise a great shit right in the middle of my bed.
I breathe in, laughed hysterically, started to prepare a washing machine and that's it.
No anger for that cat. Don't take things too personally. It avoids you loads of stress. I'm an anxious person and I know what I am talking about.