It's time to play "Password." -"Password."

[ Cheers and applause ]

♪♪

-Well, our first team tonight,

he's the host of "The Tonight Show."

And he's a four-time NBA champion.

It's Jimmy Fallon and Shaquille O'Neal.

[ Cheers and applause ]

And their opponents -- She stars in "This Is Us" on NBC.

And she's currently on tour opening for Katy Perry.

Say hello to Mandy Moore and Noah Cyrus.

[ Cheers and applause ]

Oh.

Now, the rules of the game are very simple.

I will give each of you a password.

Then you give a one-word -- that's one word only -- clue

to your partner to guess that password.

The team with the most points after four words wins,

and the first clue goes to... Noah and Jimmy.

-Here we go.

-The password is "pinkie."

-Noah, why don't you start us off?

-Finger. [ Laughs ]

[ Laughter ]

-Finger. -Finger.

-Only one word?

-Yes. Only one. -Yeah.

-Can we steal the point?

[ Laughter ]

-You'll have a chance. -I'm sure you know what finger.

-I already know the answer.

-Wait. Can I do another clue now?

-No. -Oh, okay.

-Shaq knows the answer already.

-How? Did you look at my card?

-It's lickin' good -- finger-lickin' good.

-No, no, no, no.

One word. -One word.

-Oh, I'm sorry. I'm sorry. -One word.

-My bad.

-Oh.

-That doesn't count. -That doesn't count.

-I have another clue now.

-I think you can only give one word, right?

-Right, one word. -I'm going to guess middle?

-Nice, but no. -No.

-Nice guess. -I ruined it.

-No, no, it's okay. -Jimmy, your turn.

You did not ruin it. -You didn't ruin it.

-Okay.

-Jimmy's going to ruin it.

-So one clue is finger.

-It's one word back.

-Has to be pinkie.

[ Cheers and applause ]

♪♪

-Oh, whoa, whoa.

Shaq attack.

-It has to be pinkie.

-Oh, my gosh, that's nuts.

-Has to be pinkie, man, if it's not -- Yeah, he's right.

-First to Shaq. -All right, Mandy.

-And, Mandy.

-The password is "camel."

-Shaq, you are up first. -Okay, buddy.

You can do this.

[ Laughter ]

-Hump. -Sorry?

-Hump.

[ Laughter ]

-Hump. Hump.

The man said hump. -You said hump?

-Hump.

H-U-M-P. -Yeah, yeah, yeah.

Hump.

Humpty hump.

Wednesday?

[ Laughter ]

-No. -That's a good guess.

-No. That's a good guess. -That's legitimate.

-That is officially hump day. -Okay.

You heard... -Hump.

-...hump.

Toe.

[ Audience groans ]

-Oh, snap!

♪♪

-Camel toe? -Yo!

[ Bell dinging ]

-Oh, ho-ho-ho.

It's a family show. -Oh, my gosh.

-Is that legal? -I don't know.

-That's legal. -I don't know if that's legal.

-Oh, come on. -That's legal, that's legal.

All right, Noah and Jimmy, it's your --

-Well done.

-The password is "thriller."

-All right, Jimmy, we'll start off with you.

-All right. -You go. Don't say "hump."

[ Laughter ]

-'Cause --

[ Laughter ]

-Say it again.

-Wait.

[ Laughter ]

-'Cause --

-♪ 'Cause this is thriller ♪

[ Bell ringing ]

♪♪

-Oh, my gosh.

Oh!

-That was it? -That's it, yeah.

-What did he say? -'Cause --

'Cause --

That's all -- That's all we could clear, too.

-Yeah, that's it. Yeah, don't say any more.

Okay. -'Cause --

That's it. -The final clue.

-[ Laughs ] -That was amazing.

-Can't believe you got that one, man.

-All right, Shaq. -The password is "bark."

-It's 5-11. -Okay.

-You can tie this up. -You're going down.

-No, no, this is it right here. I feel it.

-5-11? Where did that come from?

-Odd math, this game. -Yeah.

-You looked at it. -I did.

-Okay. Okay. -Ready?

-No.

[ Laughter ]

-Ooh, they're in the zone. -I --

-Yeah, what are -- -Okay.

-They got in the zone there. -Yeah. AutoZone.

-Ruff.

-Dog.

-No. All right.

-You just woofed.

[ Laughter ]

-Shaq. -Wait, what?

-[ Growling ] -Aah!

-Ruff.

-Okay. What is it?

Use your thinking cap.

No.

That's not it. That's not it.

-Jimmy, hurry up. I think I know.

-They have a bond. They have a psychic bond.

-Bone? -Ooh.

-Pimple? -No.

-Oh.

-Hold on. -[ Barking ]

-Wait a second. Mandy's going to give a clue.

-Can I give a clue? Can I give a clue?

-No, no, she answered.

-She answered already.

-I jumped the gun. It doesn't count.

-And she was wildly off.

-Go ahead. -Let her have one clue.

-Well, he went...

-Okay, ready? Mandy, it's your turn.

-I didn't mean to mess your suit up.

-Don't worry about it. -Slobber.

-Ruff and tree. -Put this on eBay.

-What? -All right.

-What? -Huh?

-What? -Do I get a lifeline?

-No, you can't have a lifeline. -No.

-Ruff? -Ruff and tree?

-Yeah. You've heard "ruff" is one clue.

And now the second word she's giving you is "tree."

-Wood.

-What's that? Wood?

-I said wood. I don't know.

-Because wood is rough and it comes from a tree.

All right.

-For the win -- bark! -Bark.

-Yeah!

[ Bell dinging ]

[ Laughs ]

My thanks to Mandy Moore, Noah Cyrus,

Shaquille O'Neal, the champ!