A Bad Rash
When your skin is so messed up it's like it's been through a blender. It's swollen, it's red, and it's probably got a side of pain.
My dad's rash looked like it had been through a blender. That's a bad rash.
My teacher said the classroom was a bad rash. I think she was being serious.
My dog got a bad rash from rolling in a garbage can. Now he smells like a trash can.