Other mistake: When Larry is in the living room asking where Darrin is, before Darrin is zapped back, the kitchen door is opened and closing. Nobody is in the home or in the kitchen. The door shouldn't be opening. Likely, a crew member was exiting the living room and the editors did not catch the door swinging.
Bewitched (1964)
1 other mistake in Sam's Psychic Pslip
Starring: Agnes Moorehead, Dick York, David White, Elizabeth Montgomery
How Green Was My Grass - S4-E24
Continuity mistake: Before this episode (and after as well) Darrin and Samantha give their address as 1164 Morning Glory Circle, however in this episode, when Darrin slams the door, the '9' in 192 on their address spins around to make 162, hence the angry neighbor at 162 saying that his grass was installed at the Stevens' by mistake.
Samantha: I'm not a bad witch! I'm a good witch.
Darrin Stephens: Her mother's a bad witch.
Trivia: The Screen Gems sets of Bewitched and I Dream of Jeannie were right next to each other at the studio, and many of the actual sets and props were shared between the two shows. Both shows also shared Dick Albain, the Special Effects expert, who worked on the two shows for quite awhile.
I'd Rather Twitch Than Fight - S3-E10
Question: Darren was angry at Samantha for getting rid of his favorite coat so, why was he even angrier when he got it back?
Answer: I haven't seen the episode, but generally in the show, Darrin was always suspicious that Samantha always used some kind of witchcraft for any situation (even if she didn't). He probably figured the same thing with the coat while in her possession.
You should watch the episodes in question before giving an answer so you know what you're talking about.
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