WHY I'M RICHER

Two guys (Andy and Jack) were at a bar talking. Andy asks Jack, "do you know why I'm richer than you?", Jack says, "because you work harder?", Andy says NO! Jack says, "because you're smarter?" Andy says HELL NO! Jack says, "because you're lucky?" Andy says NOPE! WRONG AGAIN. Jack says, "I give up." Right then Andy says, "that's why."