Dave celebrates 2,500 shows at CBS with "Staffer Memories"; a recent graduate from Penn State is invited to ride a taxi pantsless; Dave and Emma Thompson instigate a pie fight.
When Carol discovers her best friend Lillian had an affair with her husband back in the seventies, she takes revenge by reporting her to the DSS for benefit fraud. Frank Gallagher, who has been posing as Lillian's dead husband and claiming his benefits, comes under suspicion.