Ben & Jerry's ice cream -- The Tonight Dough.

[ Cheers and applause ]

-It's delicious.

It's three different types of cookie dough.

Or two different types of cookie dough.

The swirl, the whole thing -- It's really good.

And anyways, we're coming out with a brand-new flavor.

-What?! [ Cheers and applause ]

-I don't want to tell you all about it.

Ben & Jerry's is doing this new thing called "Secret Stash."

-Right? They're available for a limited time.

You can only get them at the Ben & Jerry's scoop shops,

or online at benjerry.com, I think it is.

It's not Ben&Jerry. It's BenJerry.

-Benjerry? -Benjerry.

-Benjerry -Benjerry.com

-.com.

It's a gourmet deal.

And just like "The Tonight Show,"

all the proceed from our new flavor

will go to the SeriousFun Children's Network.

It's a great organization. It's where kids...

[ Cheers and applause ] It's the best!

Kids with life-threatening illnesses can go to camp

and just have fun and be a kid.

I'm so proud to be a part of it.

So thank you to SeriousFun for being involved with all this.

[ Cheers and applause ] Really, do amazing stuff.

Check out what they do. It's amazing.

Now it's time to unveil our brand-new

"Tonight Show" ice cream flavor for the very first time.

Quest! Can I get a drum roll, please?

[ Drum roll sustaining ] [ Audience cheering ]

Here we go!

Our special limited-edition

Ben & Jerry's ice-cream flavor is...

Marshmallow Moon!

[ Cheers and applause ]

Marshmallow Moon!

It's got vanilla ice cream...

marshmallow...

fudge...

and a graham-cracker swirl!

It is so good!

It is so good, and this is true,

Ben & Jerry's says it's the best flavor

they've ever come up with.

-Really?! -That's right.

They said it.

It looks almost like Marshmallow Mom.

[ Laughter ] But it's not.

-[ Jamaican accent ] Marshmallow, man.

-[ Jamaican accent ] Marshmallow, man.

-Special stash, man! -Marshmallow, man.

[ Reggae-style music plays ] [ Scatting ]

♪ It's marshmallow, man ♪

♪ Yeah, that's right ♪

♪ You get it to the shop ♪

[ Laughs ]

[ Music stops ] ♪ You go to the scoop shop -- ♪

[ Normal voice ] Oh, I'm sorry. I can't improvise.

I'm not -- I don't know r-- I don't know how to do reggae.

I can try it. Let me try it again.

[ Reggae-style music resumes ]

[ Jamaican accent ] ♪ You go to Ben & Jerry ♪

♪ To do the scoop shop ♪

♪ You start from the bottom ♪

♪ Then you eat to the top ♪

♪ Marshmallow man ♪

♪ Yeah, yeah! ♪ [ Rolls tongue ]

♪ Marshmallow, man ♪ [ Music stops ]

[ Cheers and applause ]

[ Rolls tongue ]

-I see!

[ Chuckles ] Shaba.

-Shaba. [ Laughter ]

-[ Normal voice ] You go to Ben & Jerry's scoop shops,

ask for Marshmallow moon,

go online at benjerry.com.

Thank you to Ben & Jerry's.

Thank you to SeriousFun Children's Network.

And thanks to you guys here, in the audience.

Everyone! [ Cheers and applause ]

Everyone here is going home with their very own pint

of Marshmallow Moon!

Oh, my goodness! That's right!

It's brand-new. It's not even out yet.

♪♪

Mmm-mmm-mmm! Wow.

So good.

Stick around, guys.

We'll be right back with Chris Hemsworth.

-Yo, this is good.

-♪ Marshmallow moon ♪

♪ Get ice cream, now you must get a spoon ♪