When 2 pigeons are seen outside Maude Gormley's window, the incorrect sound of Mourning Doves cooing is heard.
When Erin and Chad run around his car, his leg knocks one of the small boulders over which rolls and is apparently styrofoam.
Erin is told she can't marry Carl until she graduates high school, and she gets very upset because it is so long a time to wait. She graduates high school 2 episodes later in 'The Career Girl.'