S.C. Code Ann. § 56-5-3885: Unlawful to display obscene bumper sticker.

(A) No person may operate a motor vehicle in this State which has affixed or attached to any part of the motor vehicle which is visible to members of the public not occupying the vehicle any sticker, decal, emblem, or other device containing obscene or indecent words, photographs, or depictions.

(B) Obscene words, photographs, or depictions must be defined and interpreted as provided in Section 16-15-305(B), (C), (D), and (E).

(C) A sticker, decal, emblem, or device is indecent when:

(1) taken as a whole, it describes, in a patently offensive way, as determined by contemporary community standards, sexual acts, excretory functions, or parts of the human body; and

(2) taken as a whole, it lacks serious literary, artistic, political, or scientific value.

(D) A person who violates the provisions of subsection (A) is guilty of a misdemeanor and, upon conviction, must be punished by a fine not exceeding two hundred dollars.