What is the funniest thing you have ever done with your friends?
What's the funniest thing that you have ever done to someone?
What is the funniest thing you have ever done high? What is the funniest thing you have ever seen someone do? What is the funniest experience you ever had? What is the funniest thing ever? What is the funniest thing anyone has ever said to you? What was the funniest incident you have faced? What is the funniest thing you ever said? What is the funniest incident you ever witnessed? What is the funniest thing you've ever seen? What is the funniest thing you’ve ever seen? What is the funniest incident that you witnessed / experienced? What is the funniest thing? What are some of the funniest things you've done as a child? What is the funniest thing a child has done to you? What is the funniest thing anyone has ever said to/asked you? What is the funniest thing that you have seen? What are the funniest incidents that happened to you or that you saw? What is the funniest thing/story you've ever heard? What is the funniest thing your child ever did? What is the weirdest or funniest thing you have done as a child? What is the funniest thing you have ever heard? What's the funniest thing you've heard yourself saying? What's the funniest thing that's happened to you at school? What is the funniest thing you ever said to your family? What was the most funniest moment of your life? What was the funniest moment in your life till date? What is the funniest experience you had today? What is the most embarrassing yet funniest moment of your life? What is the funniest person you have ever met and why? What is the funniest thing you have heard or seen?