The sudden, irritable, cranky mood that happens to someone when they are super hungry or have low-blood sugar and need to eat something NOW. Both men & women suffer from this syndrome equally.
You've been out all day shopping with a friend. You're having a great time when your friend suggests going into one more shop before stopping for food, and you bite his/her head off. Your friend says, "Wow, what's wrong with you?" You say, "I'm suffering from PMS (Pre Meal Syndrome), so let's get something to eat, NOW."