Wis. Stat. § 948.10: Exposing genitals, pubic area, or intimate parts.

(1) Whoever, for purposes of sexual arousal or sexual gratification, causes a child to expose genitals, pubic area, or intimate parts or exposes genitals, pubic area, or intimate parts to a child is guilty of the following:

(a) Except as provided in par. (b), a Class I felony.

(b) A Class A misdemeanor if any of the following applies:

1. The actor is a child when the violation occurs.

2. At the time of the violation, the actor had not attained the age of 19 years and was not more than 4 years older than the child.

(2) Subsection (1) does not apply under any of the following circumstances:

(a) The child is the defendant’s spouse.

(b) A mother’s breast-feeding of her child.