The 'A Pretty Good Litmus Test for Politics' meme is a popular format used to illustrate how a single reaction to a specific event, person, or statement can immediately reveal someone's broader political or social worldview. It gained traction on social media platforms like X (Twitter) and Reddit as a shorthand for explaining the extreme polarization of modern discourse. By presenting a binary choice or a specific prompt, the meme suggests that one's stance on a niche issue is a definitive indicator of their entire ideological alignment. It is widely used for satirical commentary, social observation, and sparking debate over how predictable partisan logic has become in the digital age.