Yes, it was a joke. I was browsing another forum and saw that someone posted it. It reminded of when a chu member posted the same thing years ago. I don't remember what kind of reactions he got back then, but I thought I would try it myself for a little bit of a throwback. And for the record, while I don't have many morals, hitting a woman is one thing I wouldn't do.
As someone who rarely reads, and only read tfios at the urging of a girl, I was pleasantly surprised by it. I enjoyed it enough to go out and read the rest of John Green's books, which says a lot for someone like me. The movie was good as well.