PVV is the Dutch Party for Freedom, a right-wing populist party led by Geert Wilders that has been a major force in Dutch politics for many years. Weg ermee is a plain Dutch expression meaning away with it or get rid of it, so the combined phrase works as a short anti-PVV slogan rather than a line from a film or song. Online, short political phrases like this are reused as reaction sounds in memes, debates and election commentary, where a recognisable slogan can summarise opposition faster than a longer argument.