yo-yo , dressed in white knee-length shorts , navy blue crew-neck sweater , black socks and silver trainers , leads to the riverside field a large , angry crowd consisting of : the american tourists , wee jocko mctavish , uncle reefer and katze , lily gusset and aunty latch , the young courting couple and the podgemeister 's family , the ghost-walker himself , the parents from jorvik with their dung-covered daughters and porky the pig , the king 's head 's landlord and the blackbird called baby , the waitress from bettys and the waiter from four high petergate , the barber and the flat-capped old coot , martin mizzenmast , released from his stool , sergeant cod and a group of policemen , five japanese students , some peterite schoolboys and the custard pie pupils from bootham 's , harry gration , christa ackroyd , brucie and tess , david attenboroughs and mona mcbonkers , mister mealey , ms mousey and hamish the dog .