BOSTON, March 18, 2014 -- Teens know that drinking or using a cell phone while driving are dangerous behaviors – that's no surprise. What is surprising is that according to a new survey from Liberty Mutual Insurance and SADD (Students Against Destructive Decisions), teens seem to have a different definition of what it actually means to engage in these potentially deadly behaviors. From drinking or texting while driving to using a designated driver, the new survey highlights a sharp disconnect between what teens acknowledge as risky behavior and what they actually admit to doing behind the wheel.