The story is basically a cliche: A young, naive girl wants excitement in her life and she meets a mysterious guy who plans on taking advantage of her. There are variations on the theme in terms of gender and other specifics, but the general pattern gets repeated frequently in real life and in fictional presentations. The slight twist with the story told in this short song is that both the naive girl and the evil guy wind up getting killed before the villain can do anything nefarious to the innocent girl. It just so happens that the girl is a banana and the guy is a carrot and it is only natural that they wind up as ingredients in a delicious batch of Carrot Cake Banana Bread and, yes, that's an actual recipe which you can find in many places all over the internet!