Admiral Chase: Does Agent David carry a weapon?
Gibbs: She is a weapon.

(Gibbs walks into the squad room)
Gibbs: Come on, grab your gear. Don't wanna miss the school bus.
Tony: Class trip, boss?
Gibbs: Got a dead petty officer in a high school stairwell. Janitor found him this morning.
Tony: Hmm. (Starts singing) Wheels on the bus go...
Gibbs: (Gibbs joins in) ...round and round, round and round, round and round...

Abby: Gibbs! Trying to give me heart palpitations?
Gibbs: No. What've you got, Abbs?
Abby: Heart palpitations.

(Gibbs walks in on Tony and McGee with the blow-up doll)
Tony: Morning, Boss!
McGee: This isn't what it looks like, Boss.
Gibbs: Well, what is it, Tim?
McGee: Erm...a joke...I think. A really bad, practical joke.
Gibbs: I'm not laughing. (Gibbs turns and heads for his desk) Lose your gal-pal. (To everyone) Grab your gear. Got a dead Marine in Springfield.
(McGee tries effortlessly to hide the blow-up doll as the rest of the team head for the elevator)

Gibbs: Facebook. That's that thing that some people... do stuff with?
Ducky: The term is social networking.

Gibbs: The plane's missing.
Tony: It's been Kai-jacked!
Ziva: Did you really just say that?
Tony: I regret it already.

Gibbs: What's that?
Ducky: His liver, riddled with inoperable tumors. It doesn't appear to have been under treatment. I'd have given him six months.
Gibbs: Made killing himself easier.
Ducky: Pity does not validate cowardice.

Admiral McGee: My relationship with my son is none of your damned business.
Gibbs: You make him think he's nothing. You're the one with nothing.

I'm not alone.

Gibbs: You're superstitious?
Vance: I'm a little stitious.

Ziva: Why do I have to study all this and you don't?!
Gibbs: I was born here.

Ziva: I was wrong about Ari. And you. When I pulled the trigger, to save your life, I was not 'following orders.' I mean, how could you even think ... He was my brother. And now he is gone. Eli is all but dead to me. And the closest thing I have ... to a father...is accusing me...
Gibbs: OK.

NCIS Quotes

Tony: One other question, I know you're an expert in English history. And I was just wondering, have you ever heard of Archibald Drummond, the 17th Earl of Trent?
Ducky: The Earl of Trent. No, I can't say I have. Why?
Tony: I was just wondering. Thanks.

‘You think you’re alone in the dark. Close your eyes. Remember everything good.’ My mom said that to me just before she died. Smart lady.

Gibbs