The line comes from Matt Berry's work in What We Do in the Shadows, the television comedy about vampires sharing a house, where Berry plays the flamboyant vampire Laszlo Cravensworth. His theatrical, old-fashioned delivery turned many of Laszlo's put-downs into quotable moments for fans, and short clips of his insults circulate widely as reaction audio. Because the phrase is short, instantly recognisable and easy to drop into an edit, it has stayed popular for calling out cheeky behaviour long after viewers first heard it.