You may be looking for one of the following:
- Memetic Mutation: Phenomena that catch on with multiple people, such as, but not limited to, fandom in-jokes.
- Stock Parodies: Parodies used across multiple works.
- Stock Shout-Outs: Shout Outs used across multiple works.
If a direct wick has led you here, please correct the link so that it points to the corresponding article.