I was driving my giant piece of s*** e250 van yesterday afternoon when I had to make a right onto a busy highway that went into a construction zone with only one lane open and had to immediately cross over three lanes of heavy traffic to get into the left turn lane to make a u-turn. People weren't being particularly cheritable in letting me over, so when I saw an opening that I could get into, I took it, and probably took it pretty aggressively. This did not sit well with the driver, who tried to close the gap and laid on his horn like it was the end of the world. This frustrated me, so I gave him the finger, at which point he swerved around me dangerously, got in front of me, slammed on his brakes, got out of his car, started reaching into my vehicle and asking me "You want to get out of the car and do something?" For the record, this guy looked like some roided-out extra that fell out of an episode of the Jersey Shore. I tried to calmly explain to him that the only reason I "cut him off" was because he tried to close the gap before I could get over, I had on my turn signal, and that we all had to drive here. He kept insisting that I get out of the car and do something and I assured him that I wouldn't do that, but that I would call the police and let them settled the issue for us, at which point he ran back to his car jumped in and cut several people off trying to get back into traffic. I know I shouldn't have flipped him off, but we need to be able to give people feedback sometimes, even if it isn't particularly constructive.