Vice President Joe Biden may have done more harm than good while recently campaigning in Wisconsin for Senator Russ Feingold (D-Wis.)

During a campaign stop at a local custard shop in Milwaukee, Biden was caught on tape firing back at the store’s manager after he told the vice president that his dessert would be free of charge if he convinced the administration to lower taxes, according to Fox News.

"Don’t worry, it’s on us," the manager said to Biden after he inquired about the cost of the custard. "Lower our taxes and we’ll call it even."

After initially walking away from the employee following the remark, Biden responded several minutes later.

"Why don’t you say something nice instead of being a ’smartass’ all the time?" Biden asked the man. "Say something nice."

In an interview with WISN-TV, the manager said that the vice president later whispered to him that he was just joking, although he added that Biden did not seem pleased with his offer.

The vice president did not take questions from reporters, although he did again suggest to a group of supporters that the Bush administration is responsible for the struggling economy, both in Wisconsin and across the country.