Cycling is reaching new heights of popularity, from the urban commuters to the weekend warriors. Like any burgeoning culture, it has people who ruin it by being totally lame. These are the types of folks who either take it too seriously that it ceases to be fun or try so hard to be cool that they come off as completely idiotic. It might be you. Take heed of these 10 Signs You're a Douchebag Bike Rider.