Vacation Watch: Don't Let Your Children See This Picture of President Obama

…otherwise they might think it's okay to ride a bike without a helmet when they're older, which it is not, because head injuries cause the vast majority of bicycling deaths, and hundreds of thousands of people who don't die still wind up in the emergency room with serious head injuries from biking accidents, and the president ought to be ashamed of himself for setting this terrible example for his children and yours!

On the other hand, it can also be risky to wear a bike helmet.