This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page. Embed Code Restart Playing WATCH MORE VIDEOS FROM THIS EPISODE > OB/GYN Dr. Lisa Masterson, also known by her roller derby name "GYNOmite," goes for a spin with the O.C. Roller Girls, and has a blast! ShareTweet
