Arthur's Fist is a reaction image featuring a close-up of the protagonist Arthur Read's clenched fist from the animated children's series Arthur. The image originates from the season four episode 'Arthur's Big Hit,' which first aired in 1999, specifically during a scene where Arthur punches his sister D.W. after she breaks his model airplane. The frame gained viral fame in July 2016 after being posted on Twitter as a relatable way to express anger, frustration, or the need to hold back one's temper in annoying situations. Since then, it has become a staple of internet culture, frequently used with captions describing relatable daily struggles or controversial opinions that spark internal rage.