My Face When (MFW) and That Face When (TFW) are foundational internet acronyms used to describe a specific emotional reaction to a situation. While TFW first gained traction on imageboards like 4chan around 2009 to describe physical or emotional sensations, MFW soon followed as a specific way to pair those feelings with a visual reaction. These memes typically feature a relatable caption followed by an image of a person, animal, or character expressing a vivid emotion such as shock, disgust, or pure joy. Over the decade, they have become the universal language of social media storytelling, allowing users to convey complex moods and specific social scenarios through a single, perfectly timed reaction image.