It isn't just that He Who is Follicley Challenged channeled Don Rickles and insulted his audience. It's why he felt it necessary to say something in the first place:

Vice President Joe Biden got a laugh from his audience at a Wisconsin fundraising event Thursday when he tried to rile the crowd about the economic collapse of 2008.

"We want to reward people who manufacture things in the United States, in Wisconsin, not to take them overseas to China and to other countries!" he said to a silent room at the event for Democratic gubernatorial nominee Tom Barrett, according to a White House pool report.

He continued, saying, "You're the dullest audience I've ever spoken to," at which point he got applause and laughs. "Do you realize how many jobs Wisconsin lost? It's staggering!"

Maybe if he had called them "hockey pucks"...

When even a red meat attack can't get a rise out of Democratic partisans, you know that it's not the audience but the person speaking who is the dull one.