I was in Sydney at Bondi Beach in 2000 just before the Olympics. The place was deserted with all the shops closed in protest at the beach area being fenced off separating them from their customer base. We squeezed through the fencing as did a few other stragglers and were walking along the beach when the man in front of us unwrapped a sandwich. Suddenly he was descended upon by seagulls. At first he tried to bat them away, then he tried to outrun them but quickly realised the only way to save himself was to sacrifice his food. It was comical to watch but I'm sure quite terrifying for the victim