Gennifer Moss calls herself "earth Friend Gen" and a "yellow earth warrior." She's also been rollerskating at Tom McCall Waterfront Park wearing nothing but a smile. The Oregonian reports "When police caught up with Moss - after a call, oddly enough, from a group of construction workers - the late-afternoon crowd booed them." They told her she couldn't expose her genitalia. She whipped out a string bikini bottom and complied. Police have continued to get calls. "It's actually kind of sweet, they say. Most callers aren't angry, but rather concerned for her safety."