I had an annoying teenager experience of my own last week... probably not as bad as the OPs, but still pissed me off.
I was getting out of an elevator carrying about 120 lbs of equipment and when the door openned, some 13 year old looking ###### bag was going to try to get in. First of all, it is common sense to let people out of the elevator before you get in, but this prick tried to get in. Since I was carrying something heavy, I left the elevator forcing him to back-up... but I did say "excuse me". The kid motioned with his thumb for me to get out and said very rudely; "Get Out!". I wanted to turn around and kick him in the back as he was getting in...
