Young Jack: I think the two of you are enjoying this a bit too much.
Sam: Well, you are cute.
Young Jack: (annoyed) That's "sir" to you.
Young Jack: Daniel! Would you tell them who I am?
Daniel: Okay. Love to. Who are you?
Daniel: Stranger things have happened.
Teal'c: Name but one.
Daniel: Well, there was this time he got really old, the time he became a cave man, the time we all swapped bodies...
Daniel: Jack's account sounds like a number of UFO abduction case files I've read.
Young Jack: This, you remember; my birthday, you forget.
Daniel: Looks like you'll have a lot more!
Daniel: Look, we're not here to take you to the Tok'ra. There may not be much time.
Young Jack: Never is, is there?
Daniel: Okay, well, uh--there's no easy way to tell you this, so...Sam's just gonna come right out and say it.
Young Jack: I don't plan on staying this way.
Sam: In the meantime, try enjoying this as much as we are...sir.
Jack: Carter, I should be irked currently, yes?
Jack: (to Loki) I'll tell you what's wrong. I just woke up, I haven't had coffee, let alone a pee in seven days and I find out you stole my ass and made a..."Mini Me"!
Young Jack: (to Thor) Seems he's been playing Dr. Moreau behind your back.
Jack: (hesitates) Yes, Dr. Moreau!
Young Jack: (to General Hammond) With all due respect sir, you're not the one who went to bed watching CNN and woke up as part of the MTV generation.
Young Jack: I realise it doesn't actually say 'Colonel' anywhere on my uniform, but it should.
Loki: I was stripped of my stature after I was caught performing unsanctioned experiments on humans.
Jack: What? You've got sanctioned ones?!
(As young O’Neill tries to prove he’s O’Neill)
Daniel: What's going on?
Young Jack: Daniel!
Daniel: Sounds like him. At least the loud, grating parts.
Janet: There is a tiny abnormality, but for all intents and purposes, it's him.
Daniel: Tiny abnormality, like the fact he's suddenly quite a few years younger than he's supposed to be?
Teal'c: Do you not experience increased health and vitality?
Young Jack: My vitality was just fine, thank you!