According to a memorabilia dealer's upcoming book, O.J. Simpson admitted he killed Nicole Brown Simpson and Ron Goldman.

Evidently O.J. was smoking pot and drinkin' with Mike Gilbert when he admitted that he killed his ex-wife and her friend.

Gilbert says Simpson told him, "If she hadn't opened that door with a knife in her hand ... she'd still be alive."

The story doesn't end there. Gilbert also says he helped O.J. bloat his hands so they wouldn't fit in the infamous isotoner gloves.

O.J.'s lawyer claims that none of the allegations are true and that Gilbert is "a delusional drug addict who needs money."