Up (2009) - 3 questions

Question: At one point, Carl asked Russell why he called Phyllis (Russell's mother) by her first name. Didn't Edward Asner, the voice of Carl, say this a lot on some old show?

Answer: Yes, it was a running gag on the Mary Tyler Moore Show (1970). Ed Asner played Lou Grant, who always asked Bess (played by Lisa Gerritsen) why she called her mother Phyllis (played by Cloris Leachman) by her first name.

Question: Pixar usually shows Pixar characters in the next Pixar film into the films (like the Nemo in Monster's Inc, The Mr. Incredible doll in Nemo). Is there anything from Toy Story 3 in Up?

Answer: Yep, there is. As Carl's house initially flies away, there's a shot from inside a child's bedroom where they watch the house flying away. In that shot, next to the bed on the very far left of the screen, there's a small pink-ish teddy bear, who's a major new character in the upcoming Toy Story 3.

Question: I don't understand. What did Russell mean when he said, "Gladyss is not my mom." and why was this so dramatic?

Answer: It means his parents are divorced, or at least separated (since his dad is living with another woman), meaning he comes from a broken home and making the fact that his father never shows up to his events a lot harsher.