Favorite question in terms of pure enjoyment? (i.e. not enlightening or intellectually stimulating, but just pure FUN)?

Many months back Jon asked a question about what our favorite toys were from childhood. Trying to remember the toys I played with 25–30 years ago really brought back a lot of fond memories of my father and I hanging out together (my parents had divorced when I was a toddler, so I didn’t see him that often).
I had so much fun participating in that thread, I remember that it really made my night. What question(s) have done the same for you?