Germany coach Joachim Loew has said he will watch his language ahead of Friday's quarter-final with Greece after learning a deaf German lip-reader is tweeting his pitch-side comments.
"I have said some pretty hefty expletives, I have to admit that. So I will probably have to beware of that a little bit more in the future," said Loew after learning about football-fan Julia Probst.
Under her Twitter account EinAugenschmaus (A Feast for the Eyes), the 30-year-old reads the lips of Germany's players and coaches whenever the cameras zoom in on their faces during matches.
Under the hashtag #Ableseservice (reader service), the Germans' comments are then immediately tweeted.