What is it and why?

Greg here...
Favorite quote, eh?
Well, that should be easier. Recently I told you all about a couple of my favorite episodes--now the QUOTES...let's see...

From "You Are 16 Going On 17 And I'm Not":
Jimmy: "You're mad at me, aren't you?"
Carol: "Well, yes, I am, I mean, you told me that you've been fantasizing about me all these years. You were lying."
Jimmy: "Nuh-uh!"
Carol: "Nuh-uh?"
(Later)
Charley: "Hey, do you know where I put the--whoa! Broke up, huh? And judging by the furrow on your brow, I'm guessing two-timing."
Carol: "Charley, you've been listening at the door again."
Charley: "Nuh-uh!"

From "Roots":
Charley: "I'm gonna score in England..."

From "The Fracas In Vegas":
Charley: "I'm gonna score in Vegas..."

From "Why Do Fools Fall In Love?"
(Charley's phone rings)
Barbara: "Aren't you gonna get that?"
Charley: "Uh...probably just another hang-up. I've been gettin' 'em all day. Hello? Yes, this is Charley Dietz. What?! Who is this? (to Barbara) What kind of person would say something so sick and disgusting without asking for my credit card first?"
Barbara: (taking the phone) "You--you're gonna do what?! (realizing who it is) Carol, get off the phone."

Those are just a few...I'll probably have more later.

From The Last Temptation of Laverne:
Carol: "Pawdaddy-waddy-kins!
Barbara: "Where is he?"
Harry: "Uh gone."
Carol: "Gone?! .....PAWDADDYYYY!!!!!!!! *runs to table crying and sits* NOOOOOOOO!!!!! IT SHOULD HAVE BEEN ME!!!"
Harry: "Carol stop it! He's not gone gone he just.... *makes walking away motion with his fingers* left!"

From Full Nest:

Barbara: I started out with a good system. Every time I got in too deep with one credit card, I got a cash advance from the other to bail me out. Everything was fine until the Visa people got greedy and demanded more than the Mastercard people were willing to give.
Carol: So you paid them?
Barbara: No, I applied for American Express.