A. Play, opera, musical or other dramatic work;

B. Class, seminar or lecture conducted for a scientific or educational purpose;

C. Nudity within a locker room or other similar facility used for changing clothing in connection with athletic or exercise activities;

D. "Expressive dance" which means any dance which, when considered in the context of the entire performance, constitutes an expression of theme, story or ideas, but excluding any dance such as, but not limited to, common barroom-type topless dancing which, when considered in the context of the entire performance, is presented primarily as a means of displaying nudity as a sales device or for other commercial exploitation without substantial expression of theme, story or ideas.