It shall be unlawful and constitute an additional violation for any person 18 years of age or over who violates the foregoing section 8-7-3 (manufacture or delivery of drug paraphernalia) to knowingly deliver drug paraphernalia to a person under 18 years of age who is at least three years his junior. (Ord. of 12/1/80, No. 38-80, Sec. 4)