If in some social interaction they ask such question I expect them to actually want to know the answer. If not the question should not be asked. The answer to question can lead discussion to some place.
replyI don't think anyone is suggesting that it's not fine to eventually look up the answer to the question. But chatting about it before it gets to that point, and exhausting your guesses is much more fun than someone looking up answers to every question someone poses that doesn't have an obvious answer within a few seconds.
replyThe idea that you would consider your friend a buzzkill because they used IMDB is the type of nightmare fuel social anxiety is made of.
replyYou don't think it'd be fun to hear everyone guess and then someone looks up the answer? Sounds like trivia to me.