And I thought I was cynical.

You don't flash your lights to other drivers to let them know that there is a road crew working around the next corner? I'm not talking about holding thier hands and wiping thier noses. I'm talking about civility.

And having the right to mock them later. It's kinda like voting- if you didn't do it, you can't complain.

Almost always while hiking and I pass someone, one of us will ask about the trail ahead, or distance to the cars (depending on the direction we're traveling). The friendly chit-chat is one reason I love to go backpacking so much. In essence, I think we're not "warning" them, but just giving them an update on conditions, and letting that person decide. I'd never sit there and critique their equipment, since who knows what they have in their pack?

The last person I flashed my lights to try and warn them responded by coming into my lane, turning on his high beams, and blaring his horn at me. I wonder if he saw the Glock that was pointed in his direction as he swerved by with his finger in the air?

Yep, cynical.