I have no idea. I sometimes react violently to sudden surprises, but if it was a genuine mistake, I'd try and accept it as just one of those things. A woman ran into me with a shopping trolley a week ago and then laughed her arse off - which kind of annoyed me, but she did apologise, so I said it was OK and just took the laughter as her being nervous.
What would you do if every time you got in your vehicle, I was sat in the back seat pointing and shouting "Tally ho!"?