As long as we're smoking people...
In my not-so-humble opinion, a bit of a black cloud is a highly useful tool in teaching people a little manners!
Case in point: Here I am driving down PCH on a recent trip to Newport Beach, and I'm stuck behind some guy in a pretty new Mustang that has no idea where he's going. I was in no hurry, so whenever he slowed down or came to a stop, I didn't bother passing him. The problem is this silly little man in a Miata riding my bumper (to be honest, I could only see him when he backed off a little bit!). He's behind me honking, flashing his high-beams, swerving, and finally starts holding up his favorite finger for my viewing pleasure. So I set my Comp to 5/5 and wait. When the Mustang finally pulls over, I upshift into 4th, drop the hammer, and completely disappear the little red Miata in the thickest, blackest cloud I've ever dropped. When it finally clears, I see the Miata completely stopped and the "gentleman" behind the wheel coughing and dazed like he had no idea what hit him. In my opinion, it was a cheap lesson in manners, because if he'd have pulled that garbage here in NM where I live, somebody might have shown him his pistol. I usually go out of my way not to hammer somebody unless he deserves it, but I can't stand it when somebody whose car could fit in the bed of my truck tries to intimidate me.