A Most Unusual Wood Nymph - S3-E5
Continuity mistake: When Samantha goes back to the 15th century, Geri O'Toole is wearing a yellow dress. When Samantha pops back home, Darrin is wearing Thea Ames hit but Geri is wearing a pink dress. It all happened the same afternoon/evening. Geo should still be wearing the same yellow dress.
A Most Unusual Wood Nymph - S3-E5
Continuity mistake: When Samantha gets up off the couch to confront the wood nymph, the pillow on the couch, on the left side of the screen, is laying flat. When they move back in front of the couch when Endora arrives, the pillow is standing up against the armrest.
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