When Chester and Nan are having breakfast after a long night, there very prominently in front of Chester is a grapefruit. Put there on purpose or just what people ate for breakfast? I don't know but he never touches it.
You've never heard of anyone having half a grapefruit for breakfast? Pretty common when I was younger. I ate one today. I thought of Public Enemy too, but I don't know if filmmakers even thought of joking that way. Could be too that grapefruit were good props for breakfast. Big shape that shows up at a distance, doesn't collapse. In the end I have no ideas and should shut up.
Yeh, now that I think of it, I've often seen grapefruit halves on the breakfast table in many old films. Grapefruits I guess were very popular back then. Even "Easy to love" with Esther Williams has a complete grapefruit show and the crowning winner of the "grapefruit queen".