An alien pod crashes onto Earth and an alien horse known as Party Horse turns to Mordecai and Rigby to help him pass a U.S. History test. false 2026-09-23 01:00:52 7 2015 TV-PG tt4534298 5482709 11 Action Adventure Animation I:\Media\Shows\Regular Show (2010) [imdbid-tt1710308]\Season 06\Regular Show (2010) S06E21 Party Horse-thumb.jpg Regular Show 21 6 2015-03-19 ass ass 0 0 eng progressive False False