We'll play the card game "War."

But if you lose the hand, you get a pint of water in the face.

The first person to throw five glasses wins

and gets to water-cannon the loser.

[ Laughter, cheering ]

Noah, are you ready to do this?

-Oh, born ready!

-Here we go. Now, you trust that it's not rigged, right?

-What? -You trust?

-I don't know, man. Should I trust you?

-Yeah, of course. -Alright, then I trust you.

-I can -- You want me to cut the deck?

I can do whatever you want. Alright. Ready?

-I'm ready. 3, 2, 3. -1, 2, 3.

Or maybe it is rigged.

Alright, maybe we should -- -So that's --

-Yeah, that's -- I get water to the face.

This game -- -Jimmy, I want to you think

of a time in your life when you were in bed.

And you felt a cool, cool liquid...

that wasn't cool at all. It was actually warm!

[ Cheers and applause ]

You peed yourself!

You peed yourself!

[ Cheers and applause ]

Oh, that's so embarrassing! -I didn't see that coming.

I did not see that coming at all. Let's go.

Now it's war, dude.

Let's do this. Here we go. -Alright.

-3, 2, 1! -3, 2, 1!

-Yes! -Aah!

I want to you to think about a time...

[ Laughter ]

...in your bed. -Okay. [ Laughs ]

You're having a dream that you're going down a water slide!

-[ Screams ]

♪♪

[ Cheers and applause ]

-Refreshing, isn't it? -I like it!

[ Laughter ] I want more!

-Alright, let's do it! -Alright.

-1, 2, 3! -1, 2, 3!

-Yes! -No.

-Dude, thank you so much for coming on the show.

You are the best, dude.

-Thank you.

[ Cheers and applause ]

-[ Laughs ] Whoo! I love this game.

-I appreciate it.

-Except I'm sitting in cold water right now,

so you really did win already.

-This is -- I'm like -- It's like Wim Hof.

-Yeah, here we go. -Alright.

-3, 2, 1! -3, 2, 1!

-Yes! -Come on! How is this?

-This is unbelievable. Dude, this is crazy.

I love this, man. This is awesome. Alright.

-Be gentle. -Yeah, I will.

-Be gentle.

[ Cheers and applause ]

♪♪

-It feels good, right?

It feels really good, yeah. -Oh, my God.

-This is the best game I've ever played.

-Okay, okay, okay. 3, 2 --

-You looking at it first?

How do you feel like your odds are?

3, 2, 1.

Oh! -Ooh.

That's a war.

Alright. So we have to --

-So now -- -It's three cards, right?

And then -- -No, but then with a war,

you put your glass in a pitcher,

and then someone gets the pitcher in the head.

Alright, here we go.

So we do --

-We got to put that --

-Yeah, you don't even have room for -- Yeah.

So we do one card.

-1, 2, 3. -2, 3.

-Flip. -Oh, come on!

[ Cheers and applause ]

-Jimmy! What happened, man?

What happened?!

[ Laughter ]

[ Cheers and applause ]

-And a cup -- They're saying and one cup, too.

-And a cup. -Yeah.

[ Cheers ]

-[ Coughs ]

[ Gasping ]

That is freezing.

That water's ice cold.

Oh, my gosh. That is freezing water.

-They got this from the cold pipe.

-What you need is warm --

Alright. Here we go.

Alright. Here we go. -Alright.

-1, 2, 3. -2, 3.

-Oh, come on.

[ Laughter ]

[ Cheers and applause ]

-Just -- -Just --

-Alright. -I need you to just --

Yep, yep.

[ Laughter ]

[ Cheers and applause ]

♪♪

Whoo!

Iceman.

-Alright, okay. -Wim Hof. Come on.

-Alright. Alright. Here we go. -Alright, alright.

-Three, two, one. -Three, two, one.

-Oh, come on now! This is insane!

I want to switch -- I want to switch decks.

This is --

This is rigged.

I drank a little bit of that last one.

I drank a little bit of the last one. Okay.

-Listen, we got start -- -This feels rigged.

Oh, my gosh. Alright. Here we go.

-Now, it's -- Now it's really cold.

-Now I'm awake. Now I'm awake. Here we go.

-Okay. -Here we go, yeah.

-2, 1. -2, 1.

-Alright. Come on. This is -- Alright.

[ Laughter ]

♪♪

How did you come back?

[ Cheers and applause ]

Oh. I hate this game.

Alright. Here we go. Last one.

Oh, my gosh. Oh, my gosh. -This is -- I feel --

-I have to host the rest of the show like this.

-I feel bad, man!

-Here we go. Alright.

-3, 2, 1. -1, 2, 3. Go.

-Oh, my gosh! You won!

You won. You get to -- [ Dinging ]

Oh, my God.

-There you go, buddy. Go for it. -How do we do this?

[ Cheers and applause ]

Yep. Go for it.

[ Cheers and applause ]

[ Laughter ]

[ Cheers and applause ]

Let's go!

-Noah Centineo, the winner, everybody!

More with Noah after the break!

Come on back for more "Tonight Show"!

Oh, my gosh. -Oh, geez.

[ Cheers and applause ]

-We'll be right back.

You are dead meat.