I have no idea. To 'take the sting out' of words means to soften them. If you are telling someone something that they might not like or that might be hurtful, you could take the sting out of the words by making them sound like a complement, for example, or by using gentler language. Usually you would take the sting out of your own words, not have someone else take the sting out of what they are hearing. But I don't speak Eminen, so that may not be much help.