Matthew Gray Gubler credited as playing...
- Theodore: Simon, does this make my butt look smaller?
- Simon: Theodore, your butt looks fine. Those guys are just jerks.
- Theodore: [Introducing himself to girls] Hi, I'm Theodore. Hi, I'm Theodore. Hi, I'm Theodore.
- Simon: [Covering Theodore's mouth and muffling words] Yes, he's Theodore, in case you missed it, and I'm Simon.
- Alvin: I'm not going anywhere without Da-...
- [singing]
- Alvin: ... -aydream believer and a homecoming queen.
- Doctor: I hope for your sake he stays asleep for the entire flight.
- Simon: Maybe we should give him another shot just to be sure.
- Toby: What was school like for me? Uh, in a word: awesome. But, you know, that's 'cause I was like extremely popular.
- Simon: Is that why you still live with your grandma?
- Alvin: And refer to yourself as "The Tobester?"
- Theodore: And go
- [imitating video game]
- Theodore: pyu pyu pyu all day?
- Alvin: Do you know what Dave would say if he were here right now?
- Simon, Theodore: [screaming] Alvin!
- Alvin: Not bad, but I think it needs to come more from the belly.
- Simon: Au contraire, mon frere. I'm just going to elegantly show you how it's done.
