Memes repeat themselves, first as Halloween costumes, then as robotic participants in pranks. Pizza Rat, a subway-dwelling rodent fighting for a slice, rose to glory on a surge of bored media before being overcome by actual news. Pizza Rat later reemerged as a Halloween costume (including, of course, a sexy pizza rat option). Now, thanks to the efforts of professional stranger-annoyers Prank vs. Prank, a toy remote-control car dressed up as a pizza rat has harassed some people in the New York subway.