Newcastle United boss Steve McClaren has banned his players from swearing.
The former England coach, who was appointed at St James' Park on 10 June, had a similar policy at his previous club Derby County.
His assistant Paul Simpson - who worked alongside McClaren at Derby - explained earlier this year that the policy was about maintaining discipline.
"If you're ranting and raving and swearing, you haven't got control," Simpson said in February.
"We say you are losing it so you may as well come and sit in the dugout."
He also told BBC Radio Derby at the time: "We try not to swear if we possibly can, and we certainly don't use foul and abusive language in the technical area when we are talking to officials - which seems to be the common trend."
Newcastle's first-team squad contains players who speak a number of languages. Goalkeeper Tim Krul, defender Daryl Janmaat, and midfielders Siem De Jong and Vurnon Anita are Dutch, while 10 players speaking French as a first language, and another two Spanish.