Safe to Stop

You can feel comfortable that this hitchhiker won't pull a knife or gun on you because he has no place to hide it. I know I'd certainly stop to pick him up, and I imagine you would, too.

Unfortunately, if I was hitchhiking nude, I probably would end up hard as a rock because I'd get so excited at the thought of being naked in public. On the positive side, that might increase my chances of snagging a ride as well as the probability that this would happen.