At my Uni (Edinburgh) the rather 'upper class' students who'd been to private school etc were terrible for chucking food about, not to mention flour bombs, eggs and other, worse things, during Rag Week. I reckon they had done this in boarding school. I've never found this type of behaviour funny, just childish and stupid. The staff at the 'stately home' venue were shocked and upset, and had to get the Police at 2am. Not amusing in the least IMO.