Crunch and squish: The sound your food makes when you bite into it.
My fiance's friend once said that food is only the sum of the condiments you enhance it with. For instance, a burger is nothing without the seasonings, bun, veggies and mustard/mayo/ketchup that you add to it.
Well, I'm sure it can mean more than just that. Like the sound a Palmetto bug when you step on it. Creepy little fuckers that they are.