Marge persuades Homer to enroll in a fathering enrichment class; Bart becomes a school bully.

When Cheech and Chong stop in Springfield while on their reunion tour, Homer impresses Cheech so much he asks him to replace Chong; Principal Skinner forms a new comedy team with Chong; Marge tries to help a hoarder.

During a field trip, Lisa discovers desert water that makes usually combative creatures get along; after getting kicked out of the retirement home, Grampa comes to live with the family.

Bart's film about an angry father quickly becomes a critic favorite, winning him several awards.

Moe attends a seminar in hope of gaining more confidence with women; Marge makes a change after discovering her gray hair.

When Homer insists Bart must earn the new dirt bike he wants, Bart comes up with a scheme; James Lipton interviews a TV cast.

Lisa starts coaching Bart's Little League team; Marge and Bart spend the day at an amusement park, where former MLB manager Mike Scioscia gives Bart advice.

Grampa gives each family member a portion of his savings; Lisa worries that Nelson's instant success with a new business venture might lure him away from continuing his education.

Marge persuades Homer to enroll in a fathering enrichment class; Bart becomes a school bully.

When Cheech and Chong stop in Springfield while on their reunion tour, Homer impresses Cheech so much he asks him to replace Chong; Principal Skinner forms a new comedy team with Chong; Marge tries to help a hoarder.

During a field trip, Lisa discovers desert water that makes usually combative creatures get along; after getting kicked out of the retirement home, Grampa comes to live with the family.

Bart's film about an angry father quickly becomes a critic favorite, winning him several awards.

Moe attends a seminar in hope of gaining more confidence with women; Marge makes a change after discovering her gray hair.

When Homer insists Bart must earn the new dirt bike he wants, Bart comes up with a scheme; James Lipton interviews a TV cast.

Lisa starts coaching Bart's Little League team; Marge and Bart spend the day at an amusement park, where former MLB manager Mike Scioscia gives Bart advice.

Grampa gives each family member a portion of his savings; Lisa worries that Nelson's instant success with a new business venture might lure him away from continuing his education.