The 'Challenge Accepted' meme features a stylized drawing of Barney Stinson, a character played by Neil Patrick Harris on the sitcom How I Met Your Mother. It originated in the early 2010s on platforms like Reddit and Tumblr, capturing Barney’s signature catchphrase when presented with an absurd or nearly impossible dare. The meme typically portrays a situation where someone is told they cannot or should not do something, followed by the smug, determined face of the character accepting the task regardless of the consequences. It has become a staple of internet culture for expressing bravado, misplaced confidence, or genuine determination in the face of any challenge.