With the Super Bowl coming this weekend, many Americans will be settling around their televisions, surrounded by family, friends – and of course, snacks.

And what’s one of the most popular Super Bowl snacks?  Chips and dip.  But while setting out these spreads are relatively hassle-free, they come with a hidden risk: double-dipping.

Made famous by a Seinfeld episode 20 years ago, food researchers have been studying just how bad double-dipping is ever since, the Wall Street Journal reported.

Food science professor Dr. Paul Dawson at Clemson University found that a single double-dip can potentially introduce 1,000 bacterial organisms per milliliter into salsa or other dips.  Dips are typically served in 50 to 100 mL bowls, meaning a single bowl could potentially contain 50,000 to 100,000 bacterial organisms.

Not only that, but bacterial populations approximately double every 25 minutes.

So put in perspective, how germy is double-dipping?  Surprisingly, not much, according to the Wall Street Journal.  Double-dipping isn’t as bad as putting your mouth in the bowl – but rather, the equivalent of kissing someone else.

Also, it’s important to keep in mind that not all bacteria is bad, and most of the bacteria in dip will not get you sick.

Click here to watch a video on double-dipping from The Wall Street Journal.