“perhaps the most delightful example in the pre-internet era of a manager communicating in this way came from Brian Clough at Nottingham Forest. He had noticed more bad language than ever coming from the home supporters. One day, arriving for a home game, the supporters were greeted by a hand-written sign: ‘Gentlemen. No swearing, please. Brian.’ The swearing is reputed to have stopped almost the same day. In the intense relationship between manager and fans, simple messages can have a massive impact.”

(Mike Carson, 2013)