A few to share for DD 34 mths:

Going to see Ice Age: "I hope I don't get caught in an Ice Age, burr cold."

In the theater walking down the corridor she looks up and sees the markers for each theater.
DD: What does it say?
Mom: It says Hangover.
DD: I don't like hangovers.
Mom: No one does kid.
Teenager working there and overhearing the conversation: That is the funniest thing I have heard in a long time.

Had lunch with DD after picking her up from "Splash Day" at school.
DD: Is there swimming in school?
Mom repeatedly responding to the question: I don't know. You were there, was there?
DD finally answering Mom's question: Nope.
Mom: NO? you didn't swim at school today?
DD: Nope, I didn't. I swam outside the school not IN the school.