Tiago Felipe responds to Dang, that spray referees used was first used in Brazil and now it's spreading around the world. A lather is a sort of like a bit like shaving foam, the bubbles that are produced by soap or detergent. We also use this kind of lather in carnival. It's very fun but it's dangerous if it gets into the eyes. Let's just hope that somehow there's no moment where a footballer falls over onto some remains of this lather on the ground. That's all I can say at this point - we'll just have to wait and see.