Ask! a question related to anything in pop culture: games, movies, books, music, whatever. They can be about something you’ve forgotten or tip-of-the-tongue type stuff or they can be in-universe questions about plot or other such details.
Answer! questions that other people have posed.
We do have success at this: Check out previous editions of the Pop Culture Reference Desk for more questions to answer or to learn something new yourself. For example, here’s last week’s.