Season
Season 7 Episode
- Season 4 The Secret Snake Club
- Season 4 He's Not Dead, He's My Mascot
- Season 4 Hog Wild
- Season 4 The Bad News Ghouls
- Season 4 The House of No Tomorrow
- Season 4 Happy Huggy Stuffy Bears
- Season 4 The Secret Decoder Ring
- Season 4 Wild Parts
- Season 4 The Problem with Billy
- Season 4 Wishbones
- Season 4 Dream Mutt
- Season 4 Scythe for Sale
- Season 4 Jeffy's Web
- Season 4 Irwin Gets a Clue
- Season 4 Duck!
- Season 4 Aren't You Chupacabra to See Me?
- Season 4 Zip Your Fly
- Season 4 Puddle Jumping
- Season 4 Runaway Pants
- Season 4 Scythe 2.0
- Season 4 The Firebird Sweet
- Season 4 The Bubble with Billy
- Season 4 Billy Idiot
- Season 4 Home of the Ancients
The Grim Adventures of Billy and Mandy - Season 4 Episode 9 The Problem with Billy
8.10 11 minutes When Billy goes into the mud for the fifth time in the day while wearing his white tuxedo before a wedding, Grim tries to figure out why Billy is so stupid. Billy's dad recounts Billy's life from his birth until he met Mandy and explains that Billy is not dumb, but actually a genius with a certified "Honorary Genius Degree". It is quite evident to Grim that Billy's problem is his equally dumb father.
