The phrase comes from Danielle Bregoli's appearance on Dr. Phil in September 2016, where the 13 year old challenged the audience after being accused of defiant behavior. A clip of her saying catch me outside how bout that went viral in early 2017, spawning remixes, parodies and image macros. Bregoli later built a rap career as Bhad Bhabie, but the original line remains far more famous as a shorthand for exaggerated bravado and mock confrontation online.