Wet-bolts

[CBTraveler]

I never ask for directions and never admit that I don't know everything but it's too much trouble to figure out how to use a fake name so here it goes:

What is a wet-bolt?

ps- the cost of our GPS was well worth it to allow me to not have to ask for directions and I pay the neighbor kid to come over and fix my computer screwups but only if he comes over quietly so my wife will not know that I actually asked for help.