Fired with enthusiasm, 40 of us, aged between seven and 70, waited to step into the hurling barrel. Haggises were whirled, tossed, chucked, skimmed and lobbed. "It's surprising what you can get people to do," said the master of ceremonies with satisfaction. I could only agree when I took my turn, trying not to feel too self-conscious standing in a barrel wearing a gigantic kilt. I seized my haggis, a slippery mini-haggis with a neatly tied belly-button of ox-stomach. Weighing it in my hand I realised its deadly potential - it was deep-frozen and hard as a cannonball.