mood swing episode 

An episode of a show on television that changes quickly, from tragedy to humor and back again.

Austin:Dude, did you see that new episode of HIMYM last night?
Cole: Yeah, it was kind of a mood swing episode.

John: It was really funny until Robin found out the news!
Austin: Then it got funny again at the end, so thats good.
*awkward silence*
Cole: yeah.

mood swing episode by DeionB December 17, 2011