This happens when an individual is eating at a buffet, and hordes of people from (but not limited to) church, school, community groups/organizations, events, etc. arrive via charter bus, forcing others to get out of their seats and stock up on as much food items as they can carry, before the rest is lost to the eternal multitude of hungry, rude, and moody crowds pushing and shoving their way to culinary salvation.
Mother: "Hey kiddo! How was CiCi's with Garry?"
Son: "Ehhh... it sucked ass honestly...buffet raid plundered through the food, so Garry and I hardly got to eat anything. We tried to get up and stock on food, but people started trying to take our seats, so we just left."