A bit off-topic, I know, but how about XC-skiing rage?
It was in the news here a couple of years ago. A young, enthusiastic female skier had trouble overtaking older, slower male skier in an uphill. She was skating, he was using the more traditional parallel style and there was not too much room for overtaking on the track. Some words were exchanged, when the woman and her friend finally made the pass.
The man continued for about a km or so down the track where he was to his profound astonishment ambushed by the young woman. She had been hiding behind the trees and bushes and attacked when the man came close enough. After some wrestling he was able to restrain her but she managed to bit him in the leg during the struggle.
Apparently something had been said earlier that provoked her to the point of physically attacking the guy. It took some consideration, too, as she had to wait for a while. Luckily, no permanent damage was done and I believe everyone involved was very happy afterwards that she had not been carrying any kind of weapon worse than her teeth.
--J