Since the inception of pool on YouTube I've been wondering one thing while watching matches in pool rooms in the Philippines. In between shots a bystander walks over to the table and with what looks like a stick of chalk or a cigarette almost touches it to the cloth in multiple spots. The only think I can think is that mosquitos or gnats or some critter flying around land on the table and that action gets rid of them. I've seen two, three or more bystanders reaching across the table in mid-game doing it. What in the HELL are they doing?? Anyone?