Doing an excellent job on the issue, King of the Hill tackled the "V-word" debate in its second episode, over a decade ago. The episode comes to a great conclusion, where substitute teacher Peggy finds the courage to teach sexual education and talk openly about processes of the body, and opens up a lot of the hypocrises. This, however, is the best clip:
http://youtu.be/IjHLNdWiHl4