"Graffiti" means any unauthorized inscription, word, figure, painting or other defacement that is written, marked, etched, scratched, sprayed, drawn, painted, or engraved on or otherwise affixed to or on any surface of county-owned property or non-county-owned property within the unincorporated area of the county by or with, but not limited to, any of the following: felt-tip marker, paint stick or graffiti stick, or graffiti implement, to the extent that the same was not authorized in advance by the owner or occupant thereof, or, despite advance authorization, is otherwise deemed by the bo