What should I do if an artist in a dress touches the genitals of a naked young man with her hand and he doesn't mind?

In a situation like this, it's essential to prioritize the context and consent involved. If this is part of a performance art piece where all parties are consenting adults and have agreed to the nature of the performance, then it may be acceptable within that context. Here are some steps to consider:

**Assess Consent:** Ensure that all individuals involved are consenting adults who have agreed to participate in the performance without any coercion.

**Understand Context:** Determine if this is part of an art performance, and consider the audience's perspective or any guidelines set by the venue.

**Respect Boundaries:** If you are witnessing this, think about your own comfort and the appropriateness of the situation. If you feel uncomfortable, it’s okay to remove yourself from the space.

**Follow Venue Guidelines:** If this is happening in a gallery or performance space, there may be established rules governing conduct. Familiarize yourself with these rules.

**Seek Help if Necessary:** If at any point you feel that someone is uncomfortable or not consenting, or if the situation escalates inappropriately, it's essential to notify a staff member or responsible authority.

**Reflect on the Experience:** Afterwards, consider discussing your views or feelings about the performance with others, as art often elicits a variety of responses and interpretations.

If the situation is unclear or becomes troubling in any way, it's always best to err on the side of caution and prioritize safety and consent for all involved.