21. Party Horse (2015)
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.
Release date: 2015-03-19
User rating:
7 / 10
4 votes
Season number: 6
Episode number: 21
Runtime: 11 minutes
Director: John Infantino
Writers: Benton Connor, Madeline Queripel
