👉 A 'gray bellied' person is like a chameleon that's just too busy trying to keep its coloring consistent across the rainbow that they've got a bit of a gray streak on their belly. Imagine if your belly was actually a sad, drab shade of grey instead of the vibrant hues you'd expect - it'd be a sight to behold, but not exactly the most glamorous.
Here's an edgy example sentence: "The gray bellied detective couldn't quite piece together the case of the missing mischievous mole, his perpetually drab belly giving him away like a bad joke at a funeral."