O.J. Simpson was still angry at Nicole Brown Simpson at her funeral, and although he doesn't remember what he said to her when he kissed her goodbye ... he describes what he WANTED to say in this never-before-seen video from the upcoming FOX special, "O.J. Simpson: The Lost Confession?"
It's all very strange and chilling, as O.J. elaborates to book publisher Judith Regan about the feelings he had toward his ex-wife ... and how his anger toward her didn't disappear after her death.
Simpson then oddly brings Nicole's infamous 911 call up -- where he could be heard yelling at her in the background -- as a way of explaining how he warned her of .