NCIS, Season 6

[As they walk into the squad room]

McGee:
Tony, I am not arguing with you.

Tony:
You're arguing now.

McGee:
No I am not.

Tony:
Are too.

McGee:
This is not an argument.

Tony:
Yes it is.

McGee:
(exasperated) No, it's not.

Tony:
Yes. It is. (phone rings) Hang on...

[Tony proceeds to answer Ziva's phone for her, teasing her as she walks up about the man on the other end before she snatches it]

Tony:
(wanders to McGee's desk) What were we arguing about before?

McGee:
(gives him a look) We were not arguing.

Tony:
Oh, right. Yes we were.

McGee:
Do you understand that that's what we were arguing about? The fact that you will argue about the least little thing. Sometimes you will argue about nothing at all... you just want to argue.

Tony:
That's not arguing, McContrary. C'mon. Have a little insight. That's bantering.

McGee:
No, it's not. 'Banter' is light-hearted, witty repartee.

Tony:
(grins) Go onnn...

McGee:
(looks annoyed for a moment, then gives up and smirks) It's your turn to get the coffee. Go.