Sindicator

Sin (spanish, without or transgression of divine driving law)- indicator. A person who does not use thier turn indictor (directional) while driving, thus perpetrating chaos on the road and at intersections by leaving other drivers to guess at their intentions.

I would not have stayed behind this sindicator if I had known he was making a left turn!

That sindicator just came out of the blue and almost side-swiped me, he's DWOC!