Cameron Diaz wanted to "vomit in her mouth" at the thought of sleeping with Drew Barrymore

She said: "Some media outlet called for a comment and they wanted to know whether I was with Drew. Literally, I said, 'That makes me want to vomit in my mouth.'

"That's like saying I'm having sex with my sister. Are you crazy? I wouldn't even ménage with her!"

Cameron's admission triggered a lot of speculation, but she tried not to pay it too much attention.

She said: "I don't even pay attention. People will always speculate. People like scandal. They like to put a label on something that they don't understand. It makes them feel comfortable. Mostly they like to guess who it could be."

The 41-year-old beauty admits she has been experimental in her sex life, and though she doesn't want to share too many details, she doesn't want to appear horrified by anything as she wouldn't want to "shame" anyone else.

She explained to America's Harper's Bazaar magazine: "Everybody tries things and sees things and checks them out, and either walks away or walks further in. It's life -- it's what people do.

"I'm not going to tell people what I've done, but I'm also not going to say, 'No! I would never!' If I said that, I'd be shaming myself and shaming other people's choices. I don't want to add any stigma to someone's choice."