Hansel and Gretel in Samanthaland - S8-E10
Continuity mistake: In 1-7 The Witches Are Out, Bertha (later Hagatha) is talking to Mary, and they say that Hansel and Gretel are 2 naughty children who go around eating the nice witch's house. In this episode, the witch is a "traditional" bad witch.
Answer: Larry had been telling Darrin what it means psychologically that Samantha gave the coat away. Larry said giving it away meant she's happy being married but if she liked the coat it means she desires to be single and carefree. So when Darrin sees the coat, he immediately thinks Samantha doesn't want to be married and the fact that she twitched it means (in his mind) she wants to be a single, carefree witch again.
Bishop73