I know what Myron is getting at, but, to belabor the point, pop culture is short for popular culture. If something is so well known that it is part of pop culture, it really isn't trivia, it is more of a sort of information everyone knows, not some arcane fact from the recesses of a memory.
The same is true, to a point, with current events, unless they are so insignificant that they are unimportant. With age they can become trivial, but they also become past events.