Angry Tom Brady is a reaction image pulled from a sideline shot of the New England Patriots quarterback glaring during his team's opening night loss to the Kansas City Chiefs on September 7th, 20171. The frame shows a helmet-less Brady sitting on the bench with a tight-lipped scowl as the Chiefs pull away 42-27, and Twitter users grabbed it within minutes of the broadcast2.

The image works because the five-time Super Bowl winner is almost never photographed looking rattled, so a shot of him visibly stewing over an opening-week blowout read as instant comedy for anyone who was tired of the Patriots dynasty1. Captions typically pair the scowl with a punchline about something the fictional Brady is upset about, from Falcons fans getting revenge for Super Bowl LI to jokes about his personal politics2.

Posts typically crop to the tight sideline shot of Brady's scowl and add a top caption describing what the fictional Brady is angry about, often something petty, political, or unrelated to football. A common convention pairs the still with an audio or video clip, as @cjzero did with the Curb Your Enthusiasm theme, so the frame reads as a punchline reveal2.