Challenge Accepted Hat

"Challenge Accepted" is an expression used to indicate that the speaker is willing to attempt completing a difficult task. The phrase is often associated with a rage comic character illustrated as a stick figure with crossed arms and a smug facial expression. "Challenge accepted" began as a catchphrase for the character Barney Stinson in the television sitcom How I Met Your Mother. The earliest instance of Stinson uttering the phrase can be heard in Season 2, Episode 6 “Aldrin Justice” while announcing his intention to seduce an older woman. The episode originally aired on October 23rd, 2006.