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Vice President Biden called the manager of a custard shop outside of Milwaukee, Wis., a "smartass" after the man asked him to lower taxes.

Biden made the comment Friday after the Kopp’s Frozen Custard shop manager told him that his dessert would be on the house if he lowered taxes.

"What do we owe you?" Biden is heard saying in footage captured by WISN-TV.

"Don’t worry, it’s on us," the manager replied. "Lower our taxes and we’ll call it [the custard] even."

"Why don’t you say something nice instead of being a smartass all the time?" Biden said a few minutes later.

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Biden had walked in to Kopp’s mistakenly asking for ice cream instead of custard.

The manager said later in an interview with WISN that he thought Biden didn’t seem happy initially about the taxes comment, but that the vice president later whispered that he was just kidding.

Biden was in Wisconsin to hit the campaign trail with Democratic Senator Russ Feingold. Just days earlier, the vice president told a crowd of Feingold’s supporters gathered at a fund-raising event that "there’s no possibility to restore the 8 million jobs lost in the Great Recession."

He then added that he and the current administration "inherited a god-awful mess."

After he wraps up his time with Feingold, Biden will visit the Gulf Coast on Tuesday to survey the damage caused by the BP oil spill.

Click here for more on this story from WISN.