The best food fight I ever had was at boarding school; these pretty much occured at the end of term. Anyway, we were chucking the food around and one girl had made some pasta dish in home economics so that was thrown around all over the walls and ceiling. We were making a right noise and the house mistress threw open the dorm door bellowing at us and as she walked into the room a few strands of spaghetti fell onto her face - it was the hardest thing not to piss ourselves laughing as Miss Cassey was a right mean ol bitch. Twenty years on I can still see the ol hag with her mouth hanging open and the spaghetti dripping down her face.
Thanks original poster for making me think about food fights, put a big ol smile on my face! :)