Kim Kardashian has rubbished reports that her infamous sex tape includes footage of the socialite and R&B star Ray J indulging in some X-rated water sports.

The curvy brunette may have prevented the release of the raunchy home video - but that hasn’t stopped rumours that Kim is filmed urinatin Ray J on the tape.

She says, "People were saying derogatory things (like) someone was getting urinated on. That hasn't happened in my entire lifetime.

"I'm not knocking anyone else, but I've never personally participated in that. I think it's degrading."