As much as I usually hate cliches, the "if you don't like same sex marriage, don't have one" line is concise and gets right at the heart of the matter and why the opponents of SSM are losing. SSM opponents can...not get married to a same-sex spouse. You could even call it a boycott!
I fail to see the problem with the former, and there are important sanitary and health concerns with public nudity (especially the barefoot aspect...broken glass on the sidewalk leads to litigation against the city etc.)
Public nudity: leaving people outside without identification, money, keys, or any of the other essentials for being outside. Totally safe and totally similar to SSM.
