The line comes from Beavis and Butt-Head, the MTV animated series created by Mike Judge that premiered in 1993 and follows two clueless teenagers whose schemes to 'score' almost always collapse. This exact quote, in which Beavis is convinced their luck has finally turned, was lifted by fans and passed around meme soundboards as a short reaction meme for doomed confidence. It spread through short-form video edits where the audio plays over bold predictions, and it endures because the setup-to-failure structure fits almost any joke about overestimating yourself.