Jonny: You got old.
Gibbs: Try wiser.

Ducky: Jethro, did you ever think you'd see that face again?
Gibbs: I hoped not.

Young Ducky: You're a man of few words.
Young Gibbs: I'll let you do all the talking.

I believe the operative phrase is "Just when you thought you were out ..."

Ducky [to Gibbs]

Gibbs: How do you feel about a drink?
Ducky: Depends. How do you feel about Scotch?
Gibbs: I prefer bourbon.
Ducky: Sold.

Palmer [to McGee]: How can you not know who Waldo is?
Gibbs: Who's Waldo?

I'm done with anniversaries.

Gibbs

What was this guy doing down here?

Palmer

NCIS Season 18 Episode 2 Quotes

I'm done with anniversaries.

Gibbs

What was this guy doing down here?

Palmer