The story is even better when told by Ayoob in person. As I recall it...
The guy was for most intents and purposes a yuppie driving his yuppie lady in his yuppy car to a yuppie evening out. Some drunks in a pickup decided to harass them, blowing the horn, driving close, yelling, throwing empty beer cans, then throwing full beer cans, etc. The guy finally has enough of this s#!% and drives to his workplace which has a secured parking lot with a guard at the entrance. He zooms in yelling for help. "Duh" says the guard as the car goes by. The pickup follows. "Duh" says the guard as an unauthorized truck full of drunks goes by. Guy stops, basically trapped, tells lady to run into the building and call 911 while he holds them off. He reaches into the back seat and pulls out his take-home work. Did I mention he worked for a gun company? No? Said take-home work was a Ruger machinegun that he was studying. Gets out, points gun at advancing goblin who is approaching with some kind of weapon (tire iron?). Goblin continues advancing. Guy fires a warning burst over goblin's head, causing $50,000 damage to building across the street. Goblin advances, saying "F#@% you and your machinegun." Goblin never says anything again after that.
Well, that's how _I_ remember hearing the story.