fandom behavior
observational
the one-line answer
Acting according to fandom norms rather than general social norms.
Fandom behavior is what happens when someone applies fandom logic outside of fandom contexts. The intensity and investment of stan culture showing up in real life or general discourse.
mainstream
Your coworker might use this word.
01 / in the wild
hear it move.
description
getting into arguments about fictional characters is fandom behavior.
That level of investment in fictional people is specific to fandom culture.