My son's first accident was at the parking garage at his college. He had someone behind him who was riding up on him, and while trying to hurry and get out of their way, he cut the turn into the parking space too close and didn't have the angle, and the front bumper scraped along the car that was parked in the spot next to where he was trying to get into.
Meanwhile, the other car went on its merry way, while he ended up calling me and I had him call campus police to report it, and then we obviously had to file an insurance report for both his car and the one he hit (he left a note).
My advice to him was from now on, ignore the people behind you and do what you need to regardless of them riding up, honking, flashing, etc. Because they don't care. You'll end up in an accident trying to get out of their way and they'll just continue their day and get wherever they're going 5 seconds faster.