From the AP:

The Brazilian referee and his assistants who will work the England-United States match at the World Cup have been studying English-language obscenities the players might use.

Carlos Simon will referee Saturday's match in Rustenburg, assisted by Roberto Braatz and Altemir Hausmann. They want to ensure players can't get away with abuse.

"We have to learn what kind of words the players say," Hausmann told Brazilian broadcaster Globo Sport. "All players swear and we know we will hear a few."

Braatz says they aren't learning them in "11 different languages, but at least we have to know the swear words in English."

FIFA denied reports that match officials have been given lists of swear words to listen for, but did say proficiency in English was a requirement for referees and assistants working the World Cup.

Looks like players are going to have to really step up their games.