It seems like part of the performance art element would be a stark realization that the naked body, most of the time, is not very sexy. Bodies just standing around and doing what most people do all day aren’t all that attractive most of the time. They’re kind of awkward except for the few most fabulous people. I once saw a photo shoot similar to some of the things that Dove does where women took two photos, one in a classically alluring pose (still SFW) and one just standing there. When they posed in the ways with backs curved and whatnot they created that allure through their attitudes and artificial curves. Just standing there with arms hanging and everything else hanging they weren’t conventionally attractive. It was a really interesting artistic lesson in how beauty is created. Berkeley Naked Guy, while having a fabulous body, is also pretty awkward looking doing normal every day things naked.