Okay, blowing a horn is now rude; sure the driver wasn’t sounding the horn to let you know that you almost hit them? Rules of right of way state that cars exiting a parking spot must yield to oncoming traffic. Technically you were in the wrong. Case 2, I wouldn’t call the initial part rude, it was stupid and illegal. Turn them in for driving left of the centerline. When they blocked you from moving over that might be rude or just another case of an idiot behind the wheel. Don’t get into a fight with them because you can be arrested as readily as they can, take the tag number, type of car, and call the law. The police can only help if they know what is going on.
Sxy,
Now that is rude.