If you see a guy next to you stroking his cock, how do you let him know you're enjoying the show? If someone pulls into a rest area is there a way for them to signal that they would be willing to suck off any trucker drivers? Just curious on this, I'm not a truck driver but have seen a few guys exposing themselves on the road. I figured truckers get a much better advantage point and could see a lot more than most average drivers.