When I was at school, a Skeg was one who hung around at the beach all the time and surfed a lot. As opposed to the Westies, who wore flannelette shirts and did their best to act tough.
Makes about as much sense now as it did then. ie: not much.
"Then of course there is SCEGGS - the Sydney Church of England Girl's Grammar School," he said, geting wildly off track...