Wat
Wat is a deliberate misspelling of "what" typed online as a one-word reaction to confusing or absurd content. Traceable to Urban Dictionary entries from April 2003, it spread through 4chan and Reddit and later attached itself to reaction images including the widely circulated WAT Grandma photo.
Overview
"Wat" is a deliberate misspelling of "what" typed as a short reaction to something confusing, absurd, or nonsensical online2. Users drop it into chats, forum posts, or reply threads when a longer answer feels like too much and even the acronym "WTF" feels heavier than the moment calls for2. The word carries an air of playful bewilderment that traces back stylistically to the Old English exclamation "Hwæt" used in Beowulf1.
On Reddit, a rage comic character captioned "wat" became a common comment face with squinting eyes and a tilted head, and the word is often paired with reaction photos of startled expressions3. The best-known example is the image called WAT Grandma, a candid shot of an older woman caught mid-reaction.
How It Spread
How to Use This Meme
Typically "wat" gets typed on its own as a single-word reply to something bewildering, usually with no question mark and no capitalization. Common convention pairs it with a reaction photo of a wide-eyed face like WAT Grandma, or drops it into greentext posts as a punchline beat after an absurd twist.