I prefer the simple costumes, so I'll just get myself a blood-red shirt, get it a little dirty, and write
Disfigu(red) on it in white. According to the suggestions of some people, I wouldn't even have to make a weird face to pull the costume together.
Plan B would be to take things a step further into the realm of the meta-idea and wear a red baseball cap while maintaining an angry countenance. If someone asked, of course, I could write down that I was wearing Hat(red).