What is the definition of Rusty Bellied?

A 'rusty bellied' person is like a once-sharp, shiny penny that's been lying around for ages, now dented, scratched, and looking like it just wanted to get its bell rung up. Imagine this: "The once-sleek, rusty bellied mayor of Springfield was more concerned with fixing his broken teeth than addressing the city's budget crisis." Oops! That's definitely a phrase that'll make your mouth water while also unsettling you.