Fashion is weird and subjective. Cas isn't alone in thinking that. To some people, there is no difference in casual wear and sexy costume. Casual is also one of those things that are subjective. For instance, Lucy wears a dress nearly every day and considers it 'casual'.

Subtle isn't really one of Lucy's qualities. She's considering knocking off for the day, but Cas has caught her just in time. His smile is a good one. He ought to use it more. That's one of the things that Lucy is trying to do: get him to use that smile more. "Maybe because I never did decide what I want to be when I grow up," she suggests. "Is mermaid a career?" she jokes. That approval combined with his confusion makes Lucy smile and she plops down sideways, lightly in Cas's lap. "What are you eating, Handsome?"