Be it Ever So Mortgaged - S1-E2
Continuity mistake: After Darrin arrives at the house and Sam goes outside to greet him and Endora disappears from the living room, there is no carpet runner/protector on the carpet leading to the patio door and the folding style patio door blinds are totally folded. When Darrin and Sam come into the house looking for Endora the carpet runner is there and the patio door blinds are partially open.
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 ★