Iowa Code § 702.17: Sex act.

The term “sex act” or “sexual activity” means any sexual contact between two or more persons by any of the following:

1. Penetration of the penis into the vagina or anus.

2. Contact between the mouth and genitalia or mouth and anus or by contact between the genitalia of one person and the genitalia or anus of another person.

3. Contact between the finger, hand, or other body part of one person and the genitalia or anus of another person, except in the course of examination or treatment by a person licensed pursuant to chapter 148, 148C, 151, or 152.

4. Ejaculation onto the person of another.

5. By use of artificial sexual organs or substitutes therefor in contact with the genitalia or anus.

6. The touching of a person’s own genitals or anus with a finger, hand, or artificial sexual organ or other similar device at the direction of another person.