That is, when they werent basking in One Directions youthful vigor.

Here are the top nine highlights of what we learned backstage:

One Direction are crack interviewers.

Well, Niall and Harry are.

One Direction Xfactor

Credit: Fox

Well, not really.The really blonde one (i.e.

Niall Horan) and the flopsy haired one (i.e.

Harry Styles) crashed Khloe Kardashian Odoms interview with press backstage.

They were kind of sty, she joked (joked!

), but what are you going to do?Burn.

After the co-host had left, the two bandmates turned the interview on each other.

Youve got Khloe Kardashian, um, Odoms lip marks on your face, Niall observed of Harry.

How do you feel about that?

Harry rubbed his cheek.

I feel like Im in an episode of theKardashians, he said, wincing.Boom.

One Direction isnt afraid to bite the hand that feeds them.

Added Harry, He looks a lot older this time.

the posh one).

He was the shy one, explained Cowell.

In fact, he nearly didnt make it on one of the boot camp days.

To see him [now], its a big difference.

One Direction still watchX Factor.

I think the mash-up worked really well, he said.

As you saw, they were high up in the vote.

They looked like they just have fun up on stage, and thats what people want to see.

I dont know what the question was, but I agree with Harry.

But theres another act onX Factorthat is tops on Harrys speed dial.

I had a big phone bill voting for Beatrice Miller, he said.

I think shes wicked.

Shes, what, 13?

And shes the coolest voice, and a really nice girl.

I suggested [revealing the vote order] about three or four weeks ago, explained Simon.

I said, Why dont we just tell everyone, and see what happens?

At first, everyone was like, No, you cant do that.

I said, Youcando it.

I think its changed the dynamic of the show now.

Particularly for me, because I thought our acts were doing much better than was revealed tonight.

I thought One Direction was winning every week.

We never won a single week.

Now, if I had known earlier on, I might have changed something.

We can always bring it back in.

Demi Lovato doesnt know exactly what shes doing, you guys.This is my first time mentoring, said Lovato.

I dont know exactly what Im doing.

I do think I need to think about what Simon said and take it into consideration.

Obviously what Im doing isnt working, and its still an opportunity for me.

So what could she change?

Being a producer, sometimes you get to change the rules, he said with a grin.

And how did Britney Spears feel about the decision?

There was just an angelic appeal about her, she said.

Theres something, aje ne sais quoithing that I cant explain.

Im glad we got her back.

Theres just aje ne sais quoithing that I cant explain.

Its just one of those things; something you prefer.

Thats why I liked him.

I had to check my pants, double-check I didnt pee myself.

Dont worry, buddy.

Instead, you get to wrap this behind-the-scenes report up.

Dont forget to flush!