When you are so hungry that your lack of food causes you to become angry, frustrated or both.
An amalgum of hungry and angry invented to describe that feeling when you get when you are out at a restaurant and have been waiting over an hour to get the meal that you have ordered.
"Damn! Where is that steak I ordered? We've been waiting for an hour and a half here. The service here is terrible! I'm starving! I don't know about you, but I'm starting to feel really hangry!"