The 'Mouse Figurine In-Laws Story' meme stems from a viral social media post, often associated with subreddits like r/JUSTNOMIL, where a user detailed her mother-in-law's bizarre fixation on her collection of mouse figurines. In the most famous iteration, the mother-in-law was caught moving, hiding, or criticizing the tiny statues, leading to an online explosion of memes about boundary-crossing relatives and the absurdity of domestic disputes. It has since become a shorthand for any situation where a guest or relative oversteps by trying to 'improve' or 'correct' someone else's home decor or hobbies. Users leverage this template to highlight red flags in relationships or to mock the specific brand of passive-aggressive behavior often found in complex family dynamics.