Lean On Pete, the heartbreaking new film from A24 and director Andrew Haigh, is an unconventional boy-and-his-horse story, in which a young, damaged kid, played by Charlie Plummer, embarks on a journey across the Pacific Northwest with the eponymous horse to escape the hardships of his home. After the SXSW premiere for the film, we played a game with Plummer and Haigh that we’re calling “Name That Famous Horse,” where we put their horse-centric pop culture knowledge to the test.