Never played it either. Looks like it asked random trivia questions that I guess kids wouldn’t know.
http://allowe.com/games/larry/tips-manuals/lsl1-age-quiz.html
It was an old ‘kings quest’ style adventure game featuring ‘adult’ content, though I don’t think it was much past PG-13 really. You had to answer a series of trivia questions to play that were supposed to be things only an adult would probably know. I remember some questions like “What is Havarti: Cheese, A Country, Species of Fish”.