The Reese Witherspoon 2020 Challenge, also known as the 2020 Calendar Meme, first gained viral traction in August 2020 when actress Reese Witherspoon posted a 3x3 grid on Instagram documenting her deteriorating mood from January to September. The grid typically starts with a cheerful or composed image for January and progressively descends into chaotic, exhausted, or distressed expressions as the year's global events take their toll. Following Witherspoon's post, dozens of celebrities like Mindy Kaling, Mark Ruffalo, and Viola Davis joined in, turning it into a widespread social media trend. It perfectly encapsulates the collective burnout felt during the pandemic, serving as a relatable way for users to express how quickly their plans and sanity spiraled out of control.