§ 118.040 EXEMPTIONS.
   (A)   It is a defense to prosecution for any violation of this subchapter that a person appearing in a state of nudity did so in a modeling class operated:
      (1)   By a college, junior college or university supported entirely or partly by taxation;
      (2)   By a private college or university which maintains and operates educational programs in which credits are transferable to a college, junior college, or university supported entirely or partly by taxation; or
      (3)   In a structure:
         (a)   Which has no sign visible from the exterior of the structure and no other advertising that indicates a nude person is available for viewing; and
         (b)   Where, in order to participate in a class a student must enroll at least three days in advance of the class;
         (c)   Where no more than one nude model is on the premises at any one time; and
         (d)   Where the class is a general art class (not limited to painting nudes) consisting of at least 16 hours of training instruction.
   (B)   It is a defense to prosecution for a violation of this subchapter that an employee of a sexually oriented business, regardless of whether or not it is permitted under this subchapter, exposed any specified anatomical area during the employee’s bona fide use of a restroom, or during the employee’s bona fide use of a dressing room which is accessible only to employees.
(2000 Code, § 5.54.210)