Anyone remember the game Leisure Suit Larry? To get the full 18+ experience, you had to answer five trivia questions that only adults should know. But it turns out smart teens who like trivia knew most of them too (and you could just ask mom and dad, they had no clue why you were asking which President appeared on Laugh In).

Also, hilariously, a lot of those questions require a trip to Wikipedia (or a game guide) today. A lot of them reference bits of 1960s/1970s pop culture which are no longer common knowledge.

https://allowe.com/games/larry/tips-manuals/lsl1-age-quiz.ht...