Watch Luke Bryan's hilarious reaction to being pranked by his wife on 'American Idol'

By Cillea Houghton

Luke Bryan's wife, Caroline, got the ultimate revenge on her prankster husband.

On this week's episode of "American Idol," Luke got quite the startle when his wife showed up to his place of work, in disguise as a stagehand. It all started when the "stagehand" dressed in a face mask and black sweatshirt came on to the set, causing a ruckus as she wiped down the piano.

"Aggressive on the piano," Luke comments.

Later on, the mysterious person disrupts the audition of Skylar Dixon when she sets off her phone alarm and obnoxiously opens a bag of chips as Skylar is singing. That's when fellow judge Katy Perry reaches her boiling point, marching over to the rude employee and rips the bag out of her hands.

"Who is that?" Luke asks.

The situation quickly escalates, with Caroline in disguise approaching the table and taking back the bag of chips, sending the judges into a fury -- until Katy takes off the hood to reveal it's Caroline.

"Oh my God," Luke laughs, hugging his wife before throwing the bag of chips at her.

"You've been punked!" shouts Lionel Richie.

It turns out that Katy was in on the joke all along, too.

"After all the stuff he's done to me, he deserves it," Caroline tells the camera backstage with a smile.

The couple has a history of pranking one another, with Caroline saying it started when she and Luke met in college and continues to this day with their annual Pranksmas, where they prank family and friends throughout the holiday season.