In cyberspace, "trolling" is when someone posts a deliberately controversial comment, not because they really wanted to say it but because they wanted to provoke an angry, emotional response from strangers -- kind of the online equivalent of insulting someone's girlfriend in a bar, or heckling a comedian, or snapping your towel at someone in the locker room. So let's see what we have here: a mob of bicyclists, roving unpredictably and ignoring traffic......