spanked
A character that has been spanked (struck on the buttocks, with a bare hand or other object, for disciplinary or sexual reasons). This is usually indicated by a red mark on their ass, which may or may not be in the shape of a hand. General reddening of the ass also is indicative of spanking.
While not mutually exclusive with spanking, in cases where there is no active spanking occurring, the spanked tag should be used stand alone.