The Problem with Billy (S04E09)

As Billy manages to get himself stuck in the mud for the fifth time that day, all while dressed in a white tuxedo for a wedding, Grim sets out to understand Billy's baffling behavior. Billy’s father shares a tale of his son’s life from the moment he was born up to his relationship with Mandy, revealing that Billy is not foolish but rather possesses an "Honorary Genius Degree." Grim quickly realizes that the real issue lies with Billy's clueless father, who seems to contribute to Billy's antics.