Nothing if off limits for me, but only if the context is humor or an intelligent conversation. If someone is making a poor taste joke and genuinely trying to be mean spirited about it, then that's not cool. But you can usually tell when people are using humor to be dicks and when they are just trying to be funny. I don't appreciate using humor as a cover for genuine hate, racism, sexism, etc. But I rarely encounter such things in real life. That's mostly something revolving around random online anons and XBL kids.
I just think to limit humor is just silly, it seems biased and hypocritical, because what is ok to you might not be to someone else, and visa versa. It's a game that never ends, so don't even try to play it. But I agree there is a time and place for everything, regardless of what people like Bob Chipman might say. The idea that some things can never be said anywhere, in any context, is an idea that shows a startling lack of maturity. We should be able to handle insensitive jokes/words; this isn't elementary school after all. Most of us are long past the age where we realize words can't hurt us. And if they still do hurt you, you have some personal growing up to do and that's no one's problem but your own.
