No dead serious. If it's on a type of material that dry erase marker would typically come off i.e solid surfaces etc even a dry erase board. You can let sharpie dry on it and then color over it with dry erase and it wipes right up. It will make you smell like a high-school locker room but spraying axe bodyspray over permanent marker can get it off to lol

If it's permanent just color over it with dry erase marker and it will wipe right off