Season 4, Episode 15 - "Valentine's Day"
Rose makes reservations for her, Dorothy, and Blanche to spend Valentine's weekend at a mountain retreat called Sunny Meadows. As they're checking in, they're shocked to see the desk clerk is completely naked. What didn't Rose know about this resort?
It's a clothing-optional resort (a nudist camp).
In this episode, Dorothy is upset with Rose for making reservations at a nudist camp, but she said earlier that she always wanted to try one. (Season 2, Episode 17 - "Bedtime Story")
More trivia questions