My kid was complaining that while some of the cultural touchstones I introduced them to were interesting and enjoyable, I gave them a very unrealistic impression of how often they would find people who understood the references.

I'm hoping that changes when they go to college and meet more alpha nerds. But I became a Monty Python fan, for instance, when it was in its second life, and at the time it felt inevitable that it would have a third. It has aged less well than I thought. The early 70's and early 90's are much closer together philosophically and chronologically than the early 90's and the 20's. Now you're lucky if they have seen the Holy Grail, and nobody gets Parrot Sketch or Lumberjack references. And even switching from Cheese Shop to Wallace And Grommit references is out of date.