S.D. Codified Laws § 22-23-1.1
Sexual activity defined
As used in this chapter the term, sexual activity, references both sexual penetration, as defined in § 22-22-2 , and sexual contact, as defined in § 22-22-7.1 .
Source: SDCL, § 22-23-1 as added by SL 1976, ch 158, § 23-1 ; SL 2005, ch 120, § 176.