Absolutely TRASHING! Oxford students ignore ban on age-old tradition of pelting peers with confetti and foam to leave famous streets covered in mess Students have long taken part in 'trashing' at the end of each year, ruining their classmates' smart clothes But earlier this week, it emerged that the University and its colleges are trying to clamp down on the practice A campaign was launched highlighting its impact on the environment, and the staggering cost of the clean-up