Witches and Warlocks are My Favorite Things - S3-E3
Revealing mistake: When Samantha, Darrin, and Aunt Clara are "frozen" in the living room by Hagatha, Enchantra, and Endora, just as Maurice is summoned and appears, Samantha moves her right foot noticeably while Darrin and Clara remain frozen.
Answer: Telstar was an early communications satellite system. Darrin, in a particularly sexist manner reflective of this era, is saying that telling a secret to a woman means it is guaranteed to be "broadcasted" to multiple people.
raywest ★