If you've ever self-diagnosed yourself as hangry, and had people roll their eyes at you for doing so, you can know stick it to them as it is officially a real emotional state.
Mr Zane Andrew, an associate professor of physiology at Monash University, told ABC about his research around 'hanger'.
"Hanger is a biological state that is precipitated by the lack of food, and that involves feeling grumpy, agitated and impatient," he said.
He also gave tips on how hunger can escalate into hanger.
- Hunger messages are sent to other parts of the brain, like those that regulate anxiety, which wouldn't normally receive those messages.
- Hormones increase or decrease, such as ghrelin - often called the "hunger hormone" because it stimulates appetite.
- There are changes in fuels and nutrients such as glucose - also called blood sugar. The lower it gets, the more hungry you feel.
Furthermore, ABC reports how research done by the University of North Carolina found hanger is an emotional response involving personality and environmental cues.
In an interview with the American Psychological Association, co-author assistant professor Kristen Lindquist put it best.
"You don't just become hungry and start lashing out at the universe. We've all felt hungry, recognised the unpleasantness as hunger, had a sandwich and felt better.
"We find that feeling hangry happens when you feel unpleasantness due to hunger but interpret those feelings as strong emotions about other people or the situation you're in."