6. Road Kill
Many professional roadrace and Supercross stars train on road bicycles. Heck, MO counts a few cyclists among its staff, so we have nothing against them. That said, even though cyclists have just as much right to use the roads as we motorcyclists do, they are still a hazard to us (and us to them). This is especially true on tight/twisty roads with blind corners and narrow-to-non-existent shoulders.