Graffiti written in the dirt on the (usually) back of a (usually) white van.

Rules:

• Photos must be of a dirty road vehicle with something written or drawn in the dirt.
• If you take a photo, don’t do it when driving, and be safe.
• Just a description is OK too for now, as it’s not always possible to get photos (see point above).
• Profanities and phalluses (etc) must be marked NSFW.