"Two things are infinite in this world, Universe and Human stupidity, and I am not sure about the Universe"- Einstein
We as humans have every now and then proved it correct. Came out of the same stuff, on which we laugh today, ourselves, in good humor, was a part of our culture. Whose references today are taken to be offensive, even if not intended. And then we've created a hell lot of stuff like that.
Some good-intent based offensive jokes, the true taste of stupidity, at your service.