[RSMo. §573.010]
When used in this Article, the following terms shall have the meanings set out herein:
FURNISH
To issue, sell, give, provide, lend, mail, deliver, transfer, circulate, disseminate, present, exhibit or otherwise provide.
MATERIAL
Anything printed or written, or any picture, drawing, photograph, motion picture film, videotape or videotape production, or pictorial representation, or any recording or transcription, or any mechanical, chemical or electrical reproduction, or stored computer data, or anything which is or may be used as a means of communication. "Material" includes undeveloped photographs, molds, printing plates, stored computer data, and other latent representational objects.
MINOR
Any person under the age of eighteen (18).
NUDITY
The showing of post-pubertal human genitals or pubic area with less than a fully opaque covering.
OBSCENE
Any material or performance is obscene if, taken as a whole:
1. 
Applying contemporary community standards, its predominant appeal is to prurient interest in sex;
2. 
The average person, applying contemporary community standards, would find the material depicts or describes sexual conduct in a patently offensive way; and
3. 
A reasonable person would find the material lacks serious literary, artistic, political or scientific value.
PERFORMANCE
Any play, motion picture film, videotape, dance or exhibition performed before an audience of one (1) or more.
PORNOGRAPHIC FOR MINORS
Any material or performance is pornographic for minors if the following apply:
1. 
The average person, applying contemporary community standards, would find that the material or performance, taken as a whole, has a tendency to cater or appeal to a prurient interest of minors;
2. 
The material or performance depicts or describes nudity, sexual conduct, sexual excitement or sadomasochistic abuse in a way which is patently offensive to the average person applying contemporary adult community standards with respect to what is suitable for minors; and
3. 
The material or performance, taken as a whole, lacks serious literary, artistic, political or scientific value for minors.
PROMOTE
To manufacture, issue, sell, provide, mail, deliver, transfer, transmute, publish, distribute, circulate, disseminate, present, exhibit or advertise, or to offer or agree to do the same, by any means including a computer.
SADOMASOCHISTIC ABUSE
Flagellation or torture by or upon a person as an act of sexual stimulation or gratification.
SEXUAL CONDUCT
Actual or simulated, normal or perverted acts of human masturbation; deviate sexual intercourse; sexual intercourse; or physical contact with a person's clothed or unclothed genitals, pubic area, buttocks, or the breast of a female in an act of apparent sexual stimulation or gratification; or any sadomasochistic abuse or acts including animals or any latent objects in an act of apparent sexual stimulation or gratification.
SEXUAL EXCITEMENT
The condition of human male or female genitals when in a state of sexual stimulation or arousal.
[RSMo. §573.030.1]
A. 
A person commits the offense of promoting pornography for minors or obscenity if, knowing its content or character, he/she:
1. 
Promotes or possesses with the purpose to promote any obscene materials for pecuniary gain;
2. 
Produces, presents, directs or participates in any obscene performance for pecuniary gain;
3. 
Promotes or possesses with the purpose to promote any material pornographic for minors for pecuniary gain;
4. 
Produces, presents, directs or participates in any performance pornographic for minors for pecuniary gain; or
5. 
Promotes, possesses with the purpose to promote, produces, presents, directs or participates in any performance that is pornographic for minors via computer, electronic transfer, Internet or computer network if the person made the matter available to a specific individual known by the defendant to be a minor.
[1]
Note — Under certain circumstances this offense can be a felony under state law.
[RSMo. §573.040.1]
A. 
A person commits the offense of furnishing pornographic material to minors if, knowing its content and character, he/she:
1. 
Furnishes any material pornographic for minors knowing that the person to whom it is furnished is a minor or acting in reckless disregard of the likelihood that such person is a minor;
2. 
Produces, presents, directs or participates in any performance pornographic for minors that is furnished to a minor knowing that any person viewing such performance is a minor or acting in reckless disregard of the likelihood that a minor is viewing the performance; or
3. 
Furnishes, produces, presents, directs, participates in any performance or otherwise makes available material that is pornographic for minors via computer, electronic transfer, Internet or computer network if the person made the matter available to a specific individual known by the defendant to be a minor.