The phrase comes from Conor McGregor, the Irish UFC star known for trash talk as much as fighting, who told an opponent at a press conference that signing to fight him was cause for celebration at home because it meant the biggest payday of their career. The red panty night idea spread through MMA highlights, interviews and remixes, then became shorthand online for any moment when money suddenly arrives. It remains popular in sports edits and reaction videos because the line explains its own joke.
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Conor McGregor saying break out the red panties from his famous UFC press conference line, used for celebration and payday meme reactions online.
This is Conor McGregor delivering his break out the red panties line in a confident, laughing Irish accent during a UFC press conference. The short clip captures just the punchline, said like fighting him means a huge payday and a night to celebrate at home. His delivery is smug, playful and instantly quotable, which is why the phrase stuck far beyond the original opponent. Dropped into a video, it turns any win, raise or lucky break into a joke about suddenly getting rich, and viewers familiar with McGregor hear the swagger before the words even finish.