Raise your arms in a 'bring it' kind of way? You are the one who needs to be careful.
What are you trying to prove?
I hate to be the one to tell you this, but people will always be angry with you. Don't take the bait.
If they call UPS, you better hope it is because of your parking, and not because of something you did or say. Because, chances are, you won't win that argument. And if you get in a fight while you are on the clock, you're done, baby.
I don't have it now in feeders, but back in PC, whenever someone called me a name in anger, I always smiled big, waved and said something that made no sense, like, "Hey, never thought I would see you again so soon. How are the kids?" Always something that made no sense. And if they said something about my parking, I always liked to laugh and say, "Oh, I'm not driving, my boss(name your supervisor) is driving today."
Worked every time.