Right at the beginning there's Alvin begging Dave to take him on his trip:
Alvin: Please Dave! I've always wanted to see Europe! I need a little culture in my life! The Eiffel Tower! The Sistene Chapel! The Louvre in Rome!
Simon: The Louvre is in PARIS, Alvin.
Alvin: See?? I don't even know where the Louvre is!
Alvin: Hello? Dave! What a coincidence! We were just talking about you! Sure. Miss Miller, its Dave. He wants to talk to you. Ms. Miller: Hello? (Theodore press a button to play the recorder. But it's playing in reverse) David (recording): Eyb eyb. Eporue ni em teem ot, Erodoeht dna, Nomis, Nivla tnaw I. Rellim sm, olleh? Eporue ni em teem ot... (Ms. Miller rubs her ear) Simon: It's not your hearing aid, Ms. Miller. Alvin: (nervous laugh) It's a bad connection. (Theodore trying to press the right buttons; he presses the slow motion button) David (recording):Heeelllloooo Miiiissss Miilleeeer? (Alvin face palms and Simon is all "WTF?") Ms. Miller: David, are you drunk? (Theodore presses the correct button; he faints) David (recording): Hello, Ms. Miller? I want Alvin, Simon, and Theodore, to meet me in Europe. Bye bye. Ms. Miller: Could you repeat that, David? (Alvin throws his arms up and groans in frustration)
Simon barely catches the edge of the hot air balloon as it takes off.