Speaking to the Mirror, Jay McGuiness said that the teen star is a "prankster" and that he is always up to mischief.

He even managed to hit The Wanted's Siva Kaneswaran in his reproductive organ not once but twice. McGuiness said:

"Justin Bieber is a prankster. He pranks people all day. Although I'm not actually sure that what he did to Siva was a prank…We'd done the show and Justin basically just came up and punched Siva hard in the b****. And then did it again. Siva wanted to hit him back, but you can't go around smacking kids…he's only little."

Tom Parker added: "Siva limped into the dressing room and asked 'Why's he picking on me?' It was funny."