I was working on a story in which one of the characters makes multiple references to inflation scenes from movies and television. Yeah, it’s pretty cheesy, but I do that sometimes. It remains to be seen if I’ll keep them in, but that’s another issue.
I realized that all of the references were rather old. The most recent was nearly twenty years old and the oldest was almost fifty. While not quite reaching the level of anachronism, it’s a pretty long time given the ages of the characters involved.