Peter Sagal

In fact, the WD turns out to stand for what dis?

The formula is written down in a notebook that is locked in a bank vault in an undisclosed location somewhere in San Diego.

Only a handful of people have seen it over the past 70 years because, unfortunately, the notebook also reveals the name of the inventor's secret crush.

Myrna Loy.

Coming up, it's lightning fill in the blank, but first it's the game where you have to listen for the rhyme.

If you'd like to play on air, call or leave a message at 1-888-WAIT-WAIT.

That's 1-888-924-8924.

You can come see us most weeks right here at the Studebaker Theater in downtown Chicago, or you can catch us on the road.

And if you live in Chicago and you want to see our show's weird little sister, come check out our special Comedy Grab Bag live stand-up show March 11th.

At the Den Theater in Wicker Park, Adam Burke will be hosting, along with panelists Alzo Slade, Rachel Koster, and more special guests.

For tickets and more information for all our live events, go to nprpresents.org.

And while you're at it, head over to nprshop.org and check out our new merch.

You can grab one of our new wait-wait tees or sweatshirts, but you will still need your own pants.

Hmm.

Hi, you're on Wait, Wait, Don't Tell Me.

Hi there, Peter.

I'm Rachel from Las Cruces, New Mexico.

Hey, Rachel.

How are you?

I'm doing phenomenal.