Missouri Revised Statutes Title XXXVIII. Crimes and Punishment; Peace Officers and Public Defenders § 566.083. Sexual misconduct involving a child, penalty--applicability of section--affirmative defense not allowed, when

(1) Knowingly exposes his or her genitals to a child less than fifteen years of age under circumstances in which he or she knows that his or her conduct is likely to cause affront or alarm to the child;

(2) Knowingly exposes his or her genitals to a child less than fifteen years of age for the purpose of arousing or gratifying the sexual desire of any person, including the child;

(3) Knowingly coerces or induces a child less than fifteen years of age to expose the child's genitals for the purpose of arousing or gratifying the sexual desire of any person, including the child; or

(4) Knowingly coerces or induces a child who is known by such person to be less than fifteen years of age to expose the breasts of a female child through the internet or other electronic means for the purpose of arousing or gratifying the sexual desire of any person, including the child.