In the public eye, she's poised and proper all the time, but behind closed doors, well, that's another story. Carrie Underwood admits that when the cameras aren't around, she loves to cut loose and act silly.

Underwood dished that despite her squeaky clean image and No. 1 hit 'Good Girl,' she does enjoy being bad sometimes.

"It's great when you can write a meaningful song that touches people, but sometimes you just wanna have fun and sing a silly song that doesn't reflect on you as a person," the People cover girl said. "It's just a jam you wanna turn up in your car."

What does reflect Underwood as a person? Well, even though she's sweet as pie, the award-winning country songstress insists that she acts "stupid" behind closed doors. But that side of her only comes out when she knows she's "safe."

"At home we'll have the most amazing parties where everyone shows up and just acts stupid," she says.

When she's with trusted friends, Underwood loves tearing it up on the dance floor, even though her husband Mike Fisher isn't quite as enthusiastic about busting moves. He's a little more reserved than his country star wife.

As you might imagine, the 'Blown Away' hitmaker's party behavior involves singing, too -- just not her own songs. Sometimes called the "human jukebox" by her good friends, Underwood knows the lyrics to thousands of songs -- and she loves to belt them out.

"I have been called the human jukebox, yes," she reveals, adding, "But karaoke is not meant for people who can sing!"

Even though she could put everyone else's karaoke performances to shame, Underwood sounds like a blast to hang out with.

In the same interview, she mentioned that despite the dozens of awards she's received and her constant stream of No. 1 hits, Underwood would give up her career for her husband without skipping a beat. (Even though he won't hit the dance floor with her.)