I don't have any deep thoughts on manners but my pet peeve is people and lines. Just about every day everyone has to get into some kind of line somewhere. They don't teach line etiquette in schools, but everyone knows what it is. And everybody does the same mental calculations as me: That guy is ahead of me, this guy is behind me. Not one of us likes being in the line, but that's the way it is. When I was younger, I used to shrug or smirk at the line cutters. Now I'm the Line Cop. I'm judicious about it, and polite, and fair, but nobody cuts my line without explaining to my Brothers And Sisters In Line why their **** is more important than our ****. I let lots of other stuff go in life. But don't get out of line in my line.