When we lived in Arizona, we went to a church that was made up of mostly older people, because, lets face it, the average age of an Arizonan is 90. Then some young whipper snappers in their 50's started coming to church and livened things up a bit. They were a black couple, and black people just know how to do church better than anyone. Whenever the pastor said something that struck a nerve with the husband, he would say in a really loud, deep baritone voice, "WELL!" It woke the frozen chosen right up out of their slumber.
If you think about it, "WELL!" says it all. If someone says something off the wall, you neither have to agree nor disagree, just say a hearty, "WELL!" and that person will think you are a genius. You don't have to hurt their feelings and say, "I think you are a complete moron," nor do you have to waste your breath on agreeing with someone. Save your words for when they really matter.
This has nothing to do with the picture above, other than the first thing I thought when I saw that sign was, "WELL!"