Gibbs: You get Fornell in here.
DiNozzo: What should I tell him?
Gibbs: Tell him he's about to make the second biggest mistake of his life!
[Later]
Fornell: My second biggest mistake, Jethro? That's very dramatic. What was the first?
Gibbs: When you married my second wife.
Fornell: You could have warned me!
Gibbs: I did!
DiNozzo: What should I tell him?
Gibbs: Tell him he's about to make the second biggest mistake of his life!
[Later]
Fornell: My second biggest mistake, Jethro? That's very dramatic. What was the first?
Gibbs: When you married my second wife.
Fornell: You could have warned me!
Gibbs: I did!
Gibbs: You get Fornell in here.
DiNozzo: What should I tell him?
Gibbs: Tell him he's about to make the second biggest mistake of his life!
[Later]
Fornell: My second biggest mistake, Jethro? That's very dramatic. What was the first?
Gibbs: When you married my second wife.
Fornell: You could have warned me!
Gibbs: I did!
http://www.tv-quotes.com/shows/ncis/quote_31813.html