If you mock any group that you are a part of as a joke, and make sure others see it as a joke, it is fine. If you actually mock anyone with the intent of mocking them, it is still free speech, but people will definitely like it less and classify it as hate. Light teasing is maybe sorta alright, but actual mocking is not. You can say whatever the f**k you want, but don't admonish us for calling it hate, after all, we also have free speech
