I've been riding for a short time now (>4000 Miles), but I've had to "Cut Off" Paris and Britney before. Usually when they are merging into my lane without seeing me and I can't evade left or slow down enough to let them infront of me. I've gotten alot better at watching the movement of cars infront of me since then.
I've also had to "Cut Off" cars that were trying to pass me on a single lane off ramp, I've had people look me in the eye as they merge into me.
I do know that it is near Impossible to RAM a moving car on my motorcycle and continue to keep following them. But if any one says this can be done I'd love to have a lesson, please provide video.
Still you don't follow anyone home, You get a license number and call it in. And Local law enforcement needs to start acting on the complaints of Bikers.
My money says that the Girls didn't see him until he "Cut them off" scaring them, then reacted with gesters and aggressive driving. Biker coming off an adenalin surge, seeing the bimbette now flipping him off and what not, Kicks the side of her car then chases them home. Girls call daddy about the bad man on a bike chasing them. Dad come out front, Guy follows girls until they pull into drive way, passes sees dad and rides back to yell at him. Suddenly dad whips out a gun and points it at him, Biker floors it, dad seeing biker accelerate at him figures his life is in danger and opens up, and keeps engaging his target past the point where the biker is a threat, shooting him in tha back
Someone else said it best Dumn, Dumber Dumbest.
Moral of this story? Start SEEING Bikers.
http://www.msgroup.org/Tip.aspx?Num=178