I was riding up a hill on a MUP on the right. There was one guy riding down the hill on his right. Then some idiot decides to pass the guy going down the hill, by passing on his left.
The MUP only has enough room for a cyclist going one way, and a cyclist going the other way (two lanes). So, I dodged hard to my right, and into the bushes to avoid getting hit by the jerk. He biked off, didn't apologize or anything.