ORIGIN of calling someone tinny

The term "tinny" originates from the Word "tin," which refers to the metal that produces a high-pitched, thin sound when struck. It is often used to describe audio that lacks depth and richness, giving a metallic or hollow quality, similar to the sound of something made from tin. Over time, "tinny" evolved into a colloquial term used to describe people or things that seem insubstantial or lacking in substance, often implying they are superficial or not taken seriously.