Toodle pip is an old-fashioned British way of saying goodbye, and Matt Berry made it a signature sign-off as Laszlo Cravensworth in the FX comedy What We Do in the Shadows, which premiered in 2019 and is based on the 2014 film of the same name. Fans began clipping Berry's theatrical delivery for reaction videos, edits and goodbye posts, where its polite wording and over-the-top confidence created a funny contrast with modern slang. It remains popular because it is instantly recognisable, easy to drop at the end of a clip, and carries Laszlo's larger-than-life personality in just two words.