This moron intentionally cut his car in the left lane in front of me, causing me to slam on my brakes to a stop and almost causing accident #1, to halt my progression down a merging lane. I guess he didn't like that I would be ahead of him in the merged lane (REALLY??).  When I pulled behind him, he wagged his "no-no-no" finger in the rear view, at which point I raised my hand palm up (no profane gesture at all) indicating "What the heck??"  At that point, he brake-jacks me, almost causing accident #2.  Beware of this jerk...  He clearly is a frustrated, mall-cop wannabe who lives in his mother's basement and attempts to exert the only control (and apparently the only exercise) in his life through irresponsible and dangerous maneuvers of his 2-ton vehicle.  Brake-jacking is particularly contemptible. I bet this guy shoved down kids on the playground, and then went crying to the teacher that "they started it". Dude, get a life, move out of your mom's basement, get a new hobby (maybe hit the gym??), and stop putting other people in harms way.