When Mr. Humphries' mother says the script is going to be turned into a movie, she also says "you know, like Laurel and Hardy or 'Gone with the Wind'". Secondly, when Mr. Humphries has been writing for a while, he tells his Paddington Bear doll that the script "is not exactly 'Gone with the Wind'".
When Mr. Humphries' mother mentions there is a 50 square mile mall called "Beverly Hills", Mr. Humphries replies that he has seen it on TV and he even believes it has its own postal code.