" Peter found that the best polarised stress patterns were produced by using condoms. This led to the occasion when the van and our road crew were pulled over by the police one night. The officers of the law were intrigued to find one of the crew, John Marsh, cutting up a pile of condoms on the front seat of the van. ‘Don’t worry about him,’ said Peter calmly. ‘That’s our roadie – he’s mad. "

― Nick Mason , Inside Out: A Personal History of Pink Floyd