Rocket Raccoon: Metaphors go over his head.
Drax the Destroyer: NOTHING goes over my head! My reflexes are too fast, I would catch it.
Peter Parker: I'm sick of Mr. Stark treating me like a kid.
Ned Leeds: But you are a kid.
Peter Parker: Yeah. A kid who can stop a bus with his bare hands.
Steve Rogers: Before we get started, does anyone want to get out?
Tony Stark: You're from Earth?
Peter Quill: No, I'm from Missouri.
Tony Stark: Yeah, that's on Earth, dipshit.
Nick Fury: Sir! I'm going to have to ask you to exit the donut!
Loki: I have been falling for 30 minutes!
Peter Quill: You're like Mary Poppins.
Yondu: Is he cool?
Peter Quill: [Pause.] Hell yeah, he's cool.
Yondu: I'm Mary Poppins, y'all!
Jane Foster: [slaps Loki.] That was for New York!
Loki: I like her.
Tony Stark: My old man had a philosophy: Peace means having a bigger stick than the other guy.
Christine Everheart: That's a great line coming from the guy selling the sticks.
Steve Rogers: Is everything a joke to you?
Tony Stark: Funny things are.
Hank Pym: Hiya, champ, how was school today?
Scott Lang: Aw, ha ha ha! Alright, get your jokes out now, can you fix the suit?
Hope van Dyne: So cranky.
Hank Pym: You want a juice box and some string cheese?
Scott Lang: Do you really have that?
Tony Stark: What's the vibranium for?
Ultron: I'm glad you asked that, because I wanted to take this time to explain my evil plan.
Abomination: General! Any last words?
Hulk: Hulk...SMASH!
Thanos: I am... inevitable.
Tony Stark: And I... am... Iron Man!
US Army soldier: Wait! You know what you're doing?
Steve Rogers: Yeah, I've knocked out Adolf Hitler over 200 times.
Bucky Barnes: [Webbed down after the Falcon got rid of Spider-Man.] You couldn't have done that earlier?
Sam Wilson: [Also webbed down.] I hate you.
Tony Stark: I've dated hotter chicks then you.
Ellen Brandt: That's all you got? A cheap trick and a cheesy one-liner?
Tony Stark: Sweetheart, that could be the name of my autobiography.
Nick Fury: I know a renegade soldier when I see one. Never occurred to me that one might come from above.
Michelle Jones: You know, Susan Yang thinks you're a male escort.
Peter Parker: What? No! Of course I'm not a male escort.
Michelle Jones: Well then you're Spider-Man.