“Carl Fredricksen: This is crazy. I finally meet my childhood hero and he's trying to kill us. What a joke. Dug: Hey, I know a joke! A squirrel walks up to a tree and says, 'I forgot to store acorns for the winter and now I am dead.' Ha! It is funny because the squirrel gets dead.”
— Bob Peterson, Pete Docter, Tom McCarthy, Carl Fredricksen (voice), Ed Asner, imdb.com