(Cover) - EN Showbiz - Justin Timberlake thinks watching people fall over is "funny".

The 30-year-old singer-and-actor is currently promoting romantic comedy Friends with Benefits, which he stars in opposite Mila Kunis, 27.

Justin is famed for his devilish sense of humour, and admits physical comedy never fails to make him chuckle.

"I think people falling is funny," he smiled during an interview with the British edition of OK! magazine.

His co-star Mila, also present at the interview, agrees that "people getting hurt is funny". The pair were considering unanticipated tumbles after being asked if they had played any trust games to ensure they developed good on-screen chemistry.

"Did I fall on top of him as a trust game? No," asserted Mila, adding that she would have been on the floor "in two seconds".

Justin was equally relieved that no such exercises were completed. The heartthrob believes he and his stunning co-star have a deep enough connection regardless.

"I'm glad you didn't do that. I think you know me well enough," he beamed. (C) Cover Media