Kingswood Country (1980)

S3E16 Three Into Fur Won't Go

Ted has only two genuine fears: a persistent nightmare where the Kingswood is involved in a crash test and an unexpected visit from his sabre-toothed sister-in-law, Merle. However, he is completely unprepared for the chaos that ensues when his brother Bob somehow manages to turn a simple gathering into a disastrous scene filled with fur coats and unexpected women.