I remember long ago that there was a term for "some hints or actions that
spark your curiosity when watching anime", but I can't remember it. Do you
know it?

For example, I have watched some anime that uses a word, references a real
event, or a real process for doing something, and then I look up on the
Internet about that matter and I learn something new.

[This question here](https://anime.stackexchange.com/questions/5326/what-are-
yasaburo-and-professor-eating-in-episode-9) is a clear example of something
that got your attention and it make you search for it.

I guess it also extends to looking up songs/groups (learning about them)
because you liked them in the anime in the first place.
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question
slang anime terminology
Is there a Japanese term or slang for "[something specific] piqued my interest after watching an anime"?