Whether you're Irish or just a wanna-be for the day, you may choose to celebrate Saint Patrick's Day with a few Guinness or some "green" beers tonight. WOSU profiles an Ohio company with a unique way to get you home safely after you've had a few drinks. Posted on a wall in the women's restroom of a Grandview bar is a sign that says "BeMyDD." It's an ad for a designated driver - someone who can drive for you when you want to enjoy some drinks on a night out with friends, or someone to take you home after you've already had a little too much fun. But BeMyDD is not a cab company.