PENAL CODE SECTION 314-318.6
314. Every person who willfully and lewdly, either:
1. Exposes his person, or the private parts thereof, in any public place, or in any place where there are present other persons to be offended or annoyed thereby; or,
2. Procures, counsels, or assists any person so to expose himself or take part in any model artist exhibition, or to make any other exhibition of himself to public view, or the view of any number of persons, such as is offensive to decency, or is adapted to excite to vicious or lewd thoughts or acts,
is guilty of a misdemeanor.