The 'Hero' hitmaker – who has been dating tennis ace Anna Kournikova since 2001 – is not embarrassed by nudity and often strips off with his pals.
He said: “I don’t know if I’m cool with it, but I’m not extremely embarrassed. I kind of like making fun of myself. I have five good friends and one of them is an exhibitionist so I think we all follow him.
“Whenever he gets naked we all get naked and do stupid things.”
However, the 35-year-old singer was worried that Nicole Scherzinger would be embarrassed when she had to strip off for a steamy video to accompany their ‘Heartbeat’ duet.
Speaking about the Pussycat Dolls lead singer, he said: “I’m a dude at the end of the day. It’s a lot easier for a guy than a girl. She had the difficult task. But she was a trouper and the director made it very easy and made it look good.
“I think as long as they’re tasteful, naked scenes are cool.”