Ah I got the call yesterday, so so happy
And I'm not sure if I can share the specific curveball questions because I bet they'll remember who I am if they see it. Another guy who interviewed at the same time I did also got at least one curveball questions. I'd say these q's are really just to get to know your personality and I don't think you can answer them right or wrong, as long as you don't come across as a tool or douchebag. They're along the lines of "if you could go anywhere for a day, where would you go?" or "if you had to teach a class, what would you teach?"