Any individual eighteen years of age or older who knowingly, in any manner, hires, employs, uses, or permits any person under the age of eighteen years to do or assist in doing any act or thing constituting an offense under this article and involving any material, act, or thing he knows or reasonably should know to be obscene within the meaning of Section 16-15-305 is guilty of a felony and, upon conviction, must be imprisoned for not more than five years.