This happened a long time ago. I was still at high school. And the genocidal actions of Cambodian dictator Pol Pot were in the headlines. The school decided to raise money to help the survivors. One means of this was a raffle. The first prize was a bottle of whisky and a tin of biscuits. A mate and I were there when the winning ticket was drawn. It had been bought by the teacher we had after morning break. We offered to deliver the prize. Instead, we went to the staff room and told the teacher we could fix it for him to win. He said he wasn't much interested in the biscuits and we could have 'em. We then went to the home economics department and borrowed eight or nine glasses, one for the teacher and one for everyone in the class. So, the teacher arrived to find a bottle of whisky and nine glasses on his table. He took the hint.