The line comes from Ślepnąc od świateł, the Polish crime series that aired on HBO Europe in 2018, following Warsaw's drug underworld through the eyes of a dealer over one chaotic Christmas week. Dario is one of the story's criminal figures, and the "do piachu" phrase, taken from a Christmas Eve scene, carries the show's signature cold-blooded tone. Polish meme creators lifted the quote onto soundboards as a compact gangster threat, and it has circulated there ever since as shorthand for a line being crossed.