Welsh politician Tam Dalyell once found himself embroiled in a heated argument about disarmament with a Young Socialist in an Aberfoyle hotel. Some time later, Dalyell suddenly lunged at the woman from behind and stabbed her in the arm with a fork. She spun around, grabbed the utensil, and threw it across the room. "Aha!" Dalyell cried. "So you do believe in defence!"