The Brady Bunch, Season 1

Marcia:
[Marcia lost her Diary and is accusing one of the boys of taking it] Okay, if you hand it right over, I won't press charges

Greg:
What are you talking about?

Marcia:
As if you didn't know.

Peter:
Bobby, do you know what she's talking about?

Bobby:
No. Greg, do you know what she's talking about?

Greg:
No. Marcia, do you know what you're talking about?

Marcia:
I certainly do! Someone in this room took my diary.

Greg:
Your diary, you mean you actually keep one of those stupid things?

Bobby:
What's a diary?

Peter:
It's a book, that you write things in, that you don't want anyone else to read.

Bobby:
Why?

Greg:
So, you could write stuff like...

Greg:
[Greg then sits at his desk imitating Marcia writing in her diary] "Dear diary, at last I met him, my dream man. It was at the delicatessen and our fingers tingled as we reached for the same potato salad."