The earrings Lucy is wearing when she returns home from her interview belong to Blanch. We have seen her wear them in several episodes.
"Oh, Lord, it's terrible" is how Rose comes off when it comes to Lucy sleeping with a random guy on a first date, but Rose already did something similar in "Rose the Prude" when on a second or third date she did the same thing with Arnie on the boat. There's not much difference between a first and second date.
Blanche tells her niece that whenever she dates a guy, it's because she likes him, not because she wants him to like her. However, that's not true. In the Season 1 episode Blanche and the Younger Man, Blanche really went out of her way to impress a gentleman half her age, and she seemed most interested in making herself the type of woman he'd want to date.
It is revealed in this episode that Rose is a devoted Miami Vice fan.
Blanche: I don't think you heard what I said. You are staying here tonight!
Lucy: Aunt Blanche, I'm 20 years old. I'll go wherever I please. Come on, Ed.
Blanche: You walk out that door, missy, and you can forget about coming back!
Blanche: Oh, Lucy darlin', let me get a look at you! Beautiful smile, long hair, gorgeous figure! Why, it's just like looking in the mirror.
Sophia: Get some Windex!
Lucy: Aunt Blanche, you always told me if you have a stallion eatin' oats outta your hand, you best close the gate 'for ya' give him the sugar.
Dorothy: You said that Blanche.
Ed: Rose, you're amazing! I've never met anyone so smart!
Dorothy: For a police officer, you've led a very sheltered life, Ed.
Lucy: I hope I wasn't too much trouble.
Dorothy: We enjoyed having you.
Sophia: So did half of Miami.
Rose: It's not a rat! It's a cute little mouse.
Dorothy: Rose, it doesn't wear white gloves and work at Disneyland! We're talking about a live rodent!
Blanche: Sophia, what are you doing?
Sophia: Painting numbers on my toes. I keep forgetting their names!
Blanche: Lucy will be here any minute. Honey, this doesn't look very nice.
Sophia: I say, let relatives see how you really live. That way, they won't stick around.
Dorothy: (about Lucy) Blanche, this trip to the Bahamas is not with the doctor.
Blanche: What do you mean?
Sophia: The girl's a slut.
Dorothy: That's not what I meant...exactly.
(After Blanche's niece announces her affair with a doctor.)
Dorothy: That should give them something to talk about back in Dogpatch.
The background shot during the closing credits features Dorothy, Rose and Blanche standing one behind the other, with Dorothy's hand around Rose's neck after she thinks she's seen the mouse.
Dorothy: Rose, are you telling a story or performing 'Our Town?'
"Our Town" is a three act play by Thornton Wilder.