I was 11 or 12 and in my maths class. I'd eaten my usual vegetable burger and chips from the school canteen for lunch but it hadn't quite settled in my stomach. When I was in maths I was gazing into space as usual, but began to feel very queasy. I knew what was going to happen so asked my teacher if I could go to the bathroom. I didn't make it out the door and ended up vomiting in my teacher's bin! In front of everybody in the class. People weree making gagging gestures behind my back for ages afterwards!