FOND DU LAC, Wisc. - Making an impromptu stop at a Wisconsin restaurant Friday, meeting patrons and ordering four slices of cherry pie, Mitt Romney managed to slip in a dig at one of his GOP rival's chief donors, Sheldon Adelson.

The quip came when Romney was asked by the press if he was planning on buying a lottery ticket for this evening's Mega Millions Lottery drawing, which is boasting a prize of $640 million. Romney, paying cash for his pie at Schreiner's Restaurant, said that he believed Adelson, one of Newt Gingrich's financial backers, has already bought a couple.

"We were talking about that," said Romney when asked about his own plans to play the lottery. "I guess there is a massive, massive lottery. I'm not planning on playing the lottery but for those of you that are interested, we can stop by a place where you can buy a ticket."

"Have any of you bought a ticket?" Romney asked the press, to which a reporter said that they hadn't, but would like to stop to get tickets.

When restaurant owner Paul Cunningham chimed in that Fund du Lac had a winning streak in the lottery a few years ago, Romney kept discussing just how lucky one would have to be to take home the jackpot.

"Well you need a big miracle, $500 million pot, is that what's it's looking like? More than that by now?" Romney asked.

"I understand that Sheldon Adelson has bought some tickets," said the candidate, grinning.

Adelson, who has contributed millions to the Super PAC backing Newt, recently said he believes the former speaker is nearing the end of his campaign.