What was the name of the fourth episode of the 28 episode long season of an American animated television series?
Peeps (Regular Show): "Peeps" is the fourth episode of second season in "Regular Show" for originally aired on January 17, 2011 for Cartoon Network. Regular Show (season 2):  The season was 28 episodes long, starting with "Ello Gov'nor", and ending with the season finale "Karaoke Video".
Peeps