I'm in the camp of, all comedy is just making fun of things that are super dark and trying to make light of it. I personally wouldn't make a joke like that but I would never infringe upon someone who wants to make a bad joke like that. I think its funny how everything else in the book was on limits except for one thing. I believe that Nikki is really funny and would've maneuvered around it well enough to where everyone would've seen the humor in it. But, we will never know because Comedy Central execs never let her tell the jokes.