“Malice” and “maliciously” shall import an evil intent, wish, or design to vex, annoy, or injure another person. Malice may be inferred from an act done in wilful disregard of the rights of another, or an act wrongfully done without just cause or excuse, or an act or omission of duty betraying a wilful disregard of social duty. (Ord. 1145-85 § 14(11), 1985.)