A food fight in a dream represents a conflict that is unresolved. This might be an argument that was ongoing and unresolved or it could have been an argument we had with someone before bed. The most common type of food fight dream is when the person has a conflict with someone else in the family.
Dreaming of throwing food often signifies an argument you have been involved in. Dreaming of a food fight often represents feelings of anger, aggression, and hostility towards another person.
One interpretation is that your subconscious has grown tired of how everyone around you has been treating you and is resorting to extremes to get your feelings across.