Nothing is ever off-limits in humor.
Well, that depends. Censorship is wrong, but self
-discipline is an important part of creativity. Good comedy, like any good creativity, entails choosing
the right thing to say, and knowing what not to say. Just saying anything and everything because you can is not being funny, it's just being indiscriminate and lazy. Offensive humor can have value, but only if it's judicious, if it's targeted and used when and where it serves a purpose.
So while it's true that nothing should be absolutely forbidden, that does not
mean that everything should be spewed out indiscriminately without any regard for its appropriateness or impact. Censorship is wrong because it restricts freedom of choice -- but part of having freedom of choice is actually making
choices, exercising judgment and responsibility.