A fallacy in which a rhetor uses humor to ridicule an opponent and or direct attention away from the issue at hand. Like name calling, red herring, and straw man, the appeal to humor is a fallacy that manipulates through distraction.
take a look at this video on drunk driving

http://www.youtube.com/watch?v=GJaaqP7rj7Y

The video shows barbie before the accident and after the drunk driving incident. the video claims that if you drink and drive you can end up not bing as pretty as you once were due to a accident. This video apeals to humor because if you ay attention to all the funny qwips ken has to say and the music in the background you'll find it amusing.