Rising Damp S03E07 - Suddenly at Home

Rigsby's lodger Osborne is a pill-popping hypochondriac but, to Rigsby's annoyance, Ruth feels sorry for and spends time with him. One day Rigsby goes into Osborne's room to find his lifeless body and so arrangements are to be made for a funeral, Rigsby providing the coffin he had bought for himself. For a joke the boys dare him to get in the coffin and shut him in. When he gets out he sees Osborne alive and well - he had merely seemed dead due to his excess of pill-taking. Rigsby promptly collapses.