9:56 PM PT --Britney Spears just adjusted her caption, saying, "Don't worry they are NOT real knives!!! Halloween is soon!!!" Thing is ... you hear the clanging of the knives as they come together, so they sure seem real.
Britney Spears put her years-long fascination with knives on full display ... dangerously dancing with two massive butcher knives in a bizarre new video.
Spears posted the video Monday holding the razor-sharp blades with the caption, "I started playing in the kitchen with knives today" while she rubbed and even clapped the blades together while dancing.
In fact, as her conservatorship came to an end, those responsible for her care made a list of recommendations ... one major rec being to keep knives away from her.
Multiple sources tell us Britney saw knives as a form of protection, afraid she's be re-institutionalized. We're told Britney keeps knives all around her house -- including in her bedroom -- and one source said she, "was paranoid someone was going to get her, and she needed the knives as protection."