When somones ass is just achin for some man meat or huge dildo. If someone has a hungry hole it means their asshole is hungry for sexual pleasure.
Sally: Oh baby! Can you feed my Hungry Hole??
Barbara: Ya for sure babe just let me go grab my black dildo!
When someone is constantly thinking about eating, worried about eating, looking to eat, or just eating! One who is hungry and is just trying to fill one's hole (mouth).
Jennifer is such a hungry hole!