In the opening segment, when the theme song is being played and the actresses names are being flashed on the screen, there are short scenes. I can name every episode that each short clip is featuring except one and I hope someone can help me because it's driving me crazy! LOL
The short clip is the one where Blanche quickly pulls her arm up into the sleeve of a red blazer that she's wearing, Dorothy and Betty looked slightly shocked. For the life of me I do not remember what episode that is from. HELP! Thanks:)

From what I understand that is from the Break-In. It is a scene that is never shown in the actual episode. So the intro has some cut scenes. Like the one of Dorothy biting her finger actually differs from the one that is in the actual episode.