COLUMBIA, S.C. - Keep an eye on the salsa this Super Bowl Sunday: A researcher inspired by a famous "Seinfeld" episode has concluded that double dipping is just plain gross.

"That's like putting your whole mouth right in the dip!" George Costanza was admonished on the show after he dipped a chip twice at a wake. That's not too far off, said Clemson University professor Paul L. Dawson.

Last year the food microbiologist's undergraduate students examined the effects of double dipping using volunteers, wheat crackers and several sample dips. They found that three to six double dips transferred about 10,000 bacteria from an eater's mouth to the remaining dip sample.

Double dipping? 'Seinfeld' was right - Yahoo! News

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whoooda thunk... LOL... Most people are past the double dipping, but as much alcohol that is consumed at the same time should kill that bacteria.. that is during the super bowl...