Well, well, well…if it isn’t the famous society of geniuses, Mensa! You want to know which IQ test they use? Let me tell you, they don’t just use any old test! They have their very own test called the Mensa Admission Test, or the MAT for short. It’s like their own secret IQ club, but instead of a secret handshake, you need a high score on their special test. Good luck, smarty pants!