The uncomfortable state of being hungry while grocery shopping. Often results in an inability to make decisions, and/or the impulsive purchase of comestibles that otherwise would not have been chosen. 2011, of Canadian origin; from the words starving and store.
Knowing she was usually a conscientious eater, Mike was surprised to find poptarts in Katie's grocery bags. She must have been storeving, he thought.
Walter was so storeving that he couldn't think straight, and left the grocery store without buying a single useful ingredient with which to make dinner.