Justin Bieber got well and truly pranked by Ellen DeGeneres during the taping of her Friday show when a lookalike of the Calvin Klein model surprised him mid-interview.
The scary 'Bieber,' wearing CK boxer shorts and a flesh colored shirt with copies of the Canadian's tattoos, jumped out at the singer from a box as Ellen asked him about his upcoming Comedy Central Roast.
'Oh my God! Oh my God! Oh my God! Why me?' said the 20-year-old startled star as he cowered in his chair.
The stunt left the TV host in hysterics.
'Look how great you received it. This was perfect!' Ellen said. 'He was a Calvin Klein model. He was trying to be as good-looking as you.'
The comedienne explained that because she's not part of the comedy roast Thursday's taping was her 'only shot' at pranking the superstar.
Afterwards, Bieber tweeted: 'I think today was our best hang out yet. @TheEllenShow u got me. Lol.'
It's the fourth time that Justin Bieber has appeared on The Ellen DeGeneres Show this month and he was there to help promote her new ABC series Repeat After Me.
On next Tuesday's episode. the Biebs goes bowling with hilarious results as he follows instructions relayed to him through an earpiece about how to wind up the woman who's teaching him how to bowl.
'She was such a sweet lady and they made me do really weird things,' he told Ellen. 'Like her name was Tish and I had to say she had a nice tush.'
'You were so sweet,' the comedienne said, 'cause afterwards you texted me and you were like I felt so nervous because she was such a nice lady.'
It was a show full of surprises that ended with the U Smile singer meeting superfan Jacqueline Melanson from Boston who he had prank called during his last appearance on Ellen's show on Monday.
He has phoned the University of Massachusetts at Amherst student using a phoney Enlgish accent and pretending to be a professor wanting to know why her grades were failing.
The 20-year-old Melanson was invited to the show but had no clue she was going to meet the performer and when Ellen came on a TV screen in her dressing room abd invited her to join them on stage, she let out a scream and jumped up and down with her hands over her face.
She then ran on stage and excitedly hugged Bieber.
Asked why she loves him so much, she said, 'He honestly has the biggest heart. He cares so much for his fans. He is always doing things for his fans. He loves his family. His music is so inspirational.'
'I just love him so much,' she said.
Ellen showed a picture of the Belieber's bedroom that's covered with posters and photos of the singer and then Justin posed for photos with her which she can use to create her very own personal posters.