The Avengers -
Dr. Bruce Banner: So, this all seems...horrible.
Black Widow: I've seen worse.
Dr. Bruce Banner: Sorry.
Black Widow: No, we could use a little 'worse' (here, 'worse' means 'better' so the contrast is what makes it funny)
Captain America: Stark? We got him.
Tony Stark / Iron Man: Banner?
Captain America: Just like you said.
Tony Stark / Iron Man: Tell him to suit up!
('suit up' literally means 'to put on a suit'. Here, it means 'get ready to do something (fight)' but it also means to 'put on his superhero-suit' - the double meaning, a pun, is why it is comical)
Tony Stark/ Iron Man: I'm bringing the party to you!
('party' is a word used to express contrast, because it really means 'the fighting'' - the contrast is why it is funny)
Black Widow: I don't see how that's a party?
Captain America: Dr. Banner? Now might be a good time for you to get angry.
Dr. Bruce Banner: That's my secret, Captain. I'm always angry.
Tony Stark/ Iron Man: Hold on! ('wait, I'm coming!')