I was at a regatta coaching over the weekend (rowing). Coaches commonly follow the races on bike, and this course has a really nice bike path, so TONS of coaches. None of whom know how to ride, and despite the fact that there are TONS of people around them, will occasionally just swerve blindly as if they were the only living creatures within miles. I had one hit me doing just that. I had a TON of room to his right (I was going through a big parking lot, there weren't really lanes. He was probably 4 feet to the left of me. JUST as my front tire is even with his back he turns his bike 90 degrees right. I mean, the wheel might have actually gone PAST 90. This was completely out of nowhere, I had been watching him ride straight for quite a while. He caught my left leg, but not hard enough to go down.

I couldn't find anything to say to the pedestrians that helped very much, without yelling VERY loudly and sharply. Mostly I just tried to do the weaving myself, and I only had that 1 little collision. It is amazing how shocked people are to see a a bike when there are about 40 of them riding along a 1.25 mile race course.

EDIT: AMFJ, that is hilarious