Are you sick of worrying about the economy? Tired of watching political candidates go after each other like rabid dogs? Concerned about tainted milk and gas shortages and Al-Qaida?

I know exactly what you need. What we all need, actually: laughter.

Remember those crazy guys who dropped Mentos into plastic bottles of Diet Coke and became “Instanet” celebrities? You’ll be happy to hear that they’re back — just in time to provide some levity for our humor-starved nation.

Their schtick this time: a sticky note.

Two years ago, Fritz Grobe and Stephen Voltz were a couple of self-professed “goofy” guys — a professional juggler and a lawyer — fooling around with homemade science experiments in a grassy field in Maine. Using nothing more than two-liter soda bottles, Mentos candy, folding card tables, PVC pipe and rope, they created amazing stunts. A friend filmed the fun.

The “viral” video that made them world-famous features the pair setting off a series of Diet Coke-and-Mentos geysers, accompanied by sprightly technomusic by Audiobody, a pair of New England electronica geniuses.

Fritz and Stephen spent 2006 and 2007 performing their mints-in-soda stunts all over the world, from Las Vegas to Belgium.

“It’s a wonderful way to make a living,” said Fritz.

“Sure beats practicing law,” said Stephen.

David Letterman had them do their thing on his show. Oprah and Ellen, too. Coca-Cola and Mentos signed on as corporate sponsors. Millions of people viewed their videos online. The inevitable copycats tried to duplicate their success.

But you can’t duplicate Fritz and Stephen. As funny as the exploding soda bottles are, these mad scientists aren’t too shabby in the humor department, either. The charm of this phenomenon is their understated, almost humble comedic talent.

Wearing long white lab coats and huge goggles, they perform their “experiments” completely straight-faced and in silence. Like the Blue Man Group, they never speak — but they grin a lot. At the end of every performance, as the music reaches a crescendo and the last, climactic Diet-Coke-and-Mentos fountain erupts, the men raise their arms overhead, jubilant.

I love that part. And you know what? We need this right now. We need silly, happy, nonpartisan humor.

Now, back to that sticky note (which might otherwise be known as a Post-it, but evidently Fritz and Stephen don’t yet have that company on board as a sponsor).

At some point, the mad scientists evidently tired of watching soda bottles explode. Plus, it had to be getting old, that business of being soaked every time they performed. Thus was born The Spectacular Sticky Note Experiment.

It debuted last month, as a three-minute Office Max commercial on ABC Family. You can watch it on YouTube or Fritz and Stephen’s Web site, eepybird.com.

Basically, they now do for sticky notes — that staple of the office environment — what they did for Diet Coke and Mentos. Thousands of colorful Post-its do incredible tricks as the scientists watch with satisfied smiles.

“Everybody’s having so much fun,” Fritz said awhile back.

These guys might have just the medicine an ailing nation needs.

To reach Jeanne Malmgren, e-mail her at malmgrenjeanne@yahoo.com.