Matt Berry is a British actor, comedian and musician best known to many viewers as Laszlo Cravensworth in the FX vampire comedy What We Do in the Shadows. This particular recording of 'Yankee Doodle' circulates on user-generated soundboards tagged with the show, though the exact episode or session it was taken from is unverified. Its appeal is simple: Berry commits to the goofy anthem with total seriousness, and meme editors have kept it alive as shorthand for misplaced grandeur.