Someone has

written the word CUNT in the scum on my car's rear window.

I only noticed it tonight, leaving Asda, so I don't know who did it, why or when.

But they were thoughtful enough to write it backwards so when I glance in my rearview mirror, I can read it clearly.

At first I was shocked and was going to clean it away post-haste.

But now I've decided to leave it, as a warning and as a reminder.