709.14  Lascivious conduct with a minor.
  It is unlawful for a person over eighteen years of age who is in a position of authority over a minor to force, persuade, or coerce a minor, with or without consent, to disrobe or partially disrobe for the purpose of arousing or satisfying the sexual desires of either of them.
  Lascivious conduct with a minor is a serious misdemeanor.
89 Acts, ch 105, §2