Billie's Designated Drivers service, which provides a sober driver to take intoxicated people home in their own cars, is perfect for the Las Vegas lifestyle. But even the business' simple 456-RIDE phone number proves elusive to drunk customers. When Billie turns to Rhett & Link for help, they recruit an alcohol counselor and local inebriated volunteers to write a jingle so catchy, it will make Designated Drivers the last drunk dial of a night on the Strip.