What was the worst thing that has ever happened to you? Did you overcome it and if so: how?
What is the worst thing that has ever happened to you or someone you know?
What is the worst thing you have done to someone? What is the worst thing you've ever done? What is the worst thing you've done to people? What is the worst thing that you did in your life? What is the worst thing you have done in your life? What's the worst thing you ever done in your life? What's the worst thing you've ever done? What is the worst thing you have done on your life? What is the worst thing that you have done? What is the worst thing you've ever done to another human being? What is the worst thing you have done? What's the worst thing you've ever done to another human being? What is the WORST thing that ever happened to you for doing something good or nice? What's the worst thing you've ever done to yourself? What is the worst thing that has happened to you in 2014? What are the worst things that happen in your life that you never forget? What is the worst thing you could do to someone? What is the worst thing you ever did in your relationship? What is the worst thing about yourself, that has lead to your best experiences in life? What is the most unusual thing ever to happen with you? What is the worst thing you did to yourself? What's the worst thing you've ever seen? What is the most horrible thing you have ever done? What's the worst thing you've seen? What's the best thing to ever happen to you? What is the most terrible thing you have ever done? What is the worst thing you've done lately? What's the worst thing that can happen? What is the worst thing in life? What is the worst thing you have ever heard?