I mentioned this once before as a major pet peeve of mine. Why is it so hard for people to figure out how the security line works at the airport?
Again, I'm completely sympathetic if you haven't flown in the past say, 5 years. But if you have, you should know by now that shoes come off, laptops out, all metal removed, and the whole 3-1-1 thing for traveling with liquids.
To keep from flipping my lid when waiting in line, I've started ranking other travelers on a numeric scale based on their level of efficiency and awareness. If you're a traveler, I urge you to create your own, or use mine (below) as a baseline. (And to be fair, I only apply these rankings to those travelers who look like they should have a clue as to what they're doing - not the 80-year old man who's never seen a jet plane before.)
Ranks go from 1-5 (5 being the best you can be):
If nothing else, this helps pass the time when traveling the country. And if this helps just one person (ideally in front of me next time) move up in their personal rankings, then all this typing is worth it.