Saw

A construction worker was working on top of a two story building. He needed a saw, but was too lazy to go down and get it himself. So, he signals to his co-worker to get it for him. He points to his eye for I, he points to his knees for NEED, and then he starts moving his hands back and forth like he is sawing for SAW. So the co-worker, shakes his head and pulls down his pants and starts jacking off. The guy runs down the building and yells at him: "I told you that I need a saw, dumbass!" The co-worker goes "Yes, I know, I was telling you that I was coming!"