The line comes from Danielle Bregoli, then a thirteen-year-old guest on Dr. Phil in September 2016, whose confrontational 'Cash me ousside, how bow dah' became one of the defining memes of that year, spawning remixes, merchandise and her later rap career as Bhad Bhabie. The phrase entered everyday slang as a playful way to escalate an argument, and it still appears in TikTok edits and reaction compilations where a creator wants an instantly recognisable challenge sound.