It's less about the game itself and more about the people you're with when you sit down to play it. You get to know what they're squeamish about, what their prejudices are, what they're passionate about, even their fears. They say that many a truth was spoken in jest and giving someone license to say aloud dirty, disgusting, or even downright reprehensible thoughts will get to the core of someone's worldview faster than anything else. Think of it less as a game and more as a communal word-association test.