Party Horse S23E23 - 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.
- Released: 2015-03-19
- Runtime: 50 minutes
- Genre:
- Stars: J.G. Quintel, William Salyers, Mark Hamill, Sam Marin
- Director: John Infantino