Maybe something like this: What's the funniest thing that has ever happened to you?

¨What do you have the funniest thing ever?¨ Hi Mark, Yes, as others have said, it is not clear from the sentence what you mean. Do you mean one of the following: What is the funniest thing you have ever seen? What is the funniest thing you have ever done? What is the funniest thing you have ever heard? What is the funniest thing that has ever happened to you? Hope this helps you:)

I second that idea <What's the funniest thing that has ever happened to you?> and add this <What's the funniest thing that you have ever done? or maybe this <What's the funniest thing that you have ever seen ?

"What do you have? the funniest thing ever". you could turn it into a question aimed directly to/at somebody else by changing the position of the?​ but I think you meant to ask the questions that Sharon gave you.

Sorry, Mak. Can you try asking it in a different way? It is not completely clear the way you have written it.