(1) This chapter shall not be construed to restrict or prohibit the following activities or products:
(a) Plays, operas, musicals or other dramatic works that are not obscene;
(b) Classes, seminars, or lectures conducted for a serious scientific or educational purpose that are not obscene;
(c) Exhibitions, performances, expressions or dances that are not obscene; and
(d) Breast feeding of infant children.
(3) Whether or not activity is obscene shall be judged by consideration of the following factors:
(a) Whether the average person, applying contemporary community standards, would find that the activity taken as a whole appeals to the prurient interest in sex; and
(b) Whether the activity depicts or describes in a patently offensive way, as measured against community standards, sexual conduct as described in RCW 7.48A.010(2)(b); and