food alert

n. 1. the sudden hunger that occurs when you aren't thinking about your next meal, but it's time to eat, and eat now you must.
n. 2. the announcement of the condition of hunger, made know to fellow coworkers or others in the vicinity.

Matt says, 'I've been in the meeting for two hours. I am having a SERIOUS food alert!!'
Kelly says, 'Me too, I'm hungry, let's get lunch.'