In the script, John said "Sorry" to the guard as they drive pass him.
The Terminator hotwires a vehicle… after which John instantly pulls out the keys from the visor.
John: Are we learning yet?
After that, John teaching the Terminator how to speak in a more humanlike fashion.
John: No, no, no, no, no. You gotta listen to the way people talk. You don't say "affirmative" or some shit like that. You say "no problemo." And if someone comes off to you with an attitude, you say "eat me." And if you wanna shine them on, it's "hasta la vista, baby."
Terminator: (flatly) Hasta la vista, baby.
John: Yeah, or "later, dickwad." And if someone gets upset, you say "chill out." Or you could do combinations.
Terminator: (also flatly) Chill out, dickwad.
John: That's great! See, you're getting it!
Terminator: No problemo.
"He's my Uncle Bob..."
After John finds out the terminator does whatever he says he asks him to stand on one leg. The scene follows with him standing on one leg whilst talking to some guys, until John quietly says "Put your leg down" out of the corner of his mouth.
Seconded. He says it like such a mom to the tall robotic assassin.
"I need a vacation".
As Sarah is breaking out of the hospital, the guards try to reason with her and insist she's not a killer. Sarah snaps back they as far as she's concerned they're all dead anyway and they know how strongly she believes it, "so don't fuck with me!"
When they break into Cyberdyne:
John: We got company. Dyson: Police? Sarah: How many? John: 'bout all of 'em, I think.
John needs money from the payphone to make a call. He asks the Terminator for a quarter. The Terminator smashes the bottom of the payphone, breaking the coin collection box. He follows it up by handing John exactly one quarter given that's all he asked for.
When the Connors are planning to flee to Mexico, the Terminator sees a baby, then picks it up and looks at it like he has no idea what it is.