The sandwich board ad Wilbur wears is for an actual establishment. Sloppy Joe's Bar, a favorite of Ernest Hemingway, opened at Key West, FL back in 1933 and still pours drinks in 2022.
Mama hen uses the very latest in office equipment, a ten key adding machine.
Interestingly, the book "Gone with the Wind" is referenced a year before the release of the movie adaptation.
All the chicks break the fourth wall at some point in the film.
Wilbur the weasel breaks the fourth wall to identify himself as the film's villain, then continues to narrate his actions.