reversing my car out of a space in a busy car park the other day, I had checked behind me, then got slightly distracted by a car pulling into the space directly facing me in front rather fast. I continued to reverse out slowly, then caught sight of someone coming along the back of me in a car. I immediately jumped on the brake, I must have been all of a foot behind the end of the space. Cue person in car behind me honking their horn and shouting abuse. Am I unreasonable to think that this was a) incorrect use of the car horn as they weren't warning me of danger, but using it to be abusive and make a point and b) the shouting was rude and un necessary.
I was slightly shaken by it as although I was in no danger of hitting anyone with the very slow speed and was a good 6ft from the side of his car, but the shouting and foul language upset me quite a bit.