PARIS JACKSON My Nanny Snuck into MICHAEL JACKSON'S BED

Paris Jackson told a creepy story about one of her former nannies and Michael Jackson ending up in bed together ... and she said it under oath during a deposition taken for the wrongful death suit against AEG.

Video of Paris' deposition was played in court Tuesday ... and the highlight was her description of Michael's relationship with ex-nanny Grace Rwaramba.

In the depo ... Paris explained to attorneys for AEG that Michael warned his children about Grace, telling them ... "She was sneaky. She wasn't an honest person, and she lied a lot."

Paris said she didn't know specifically what she lied about -- but then seemed to suddenly remember one freaky detail about Grace sneaking into Michael's bed while they were staying in hotels.

Paris starts out saying ... "This is gonna freak you out." 

She's right. You gotta hear it, and really interesting to hear it in Paris' words
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Paris Jackson Attempts Suicide; In Stable Condition

ACCORDING TO TMZ

Paris Jackson left a suicide note and then cut her arm with a meat cleaver ... TMZ has learned.

Sources with an intimate knowledge of the situation tell TMZ ... Michael Jackson's daughter called a suicide hotline and the person on the other end was alarmed enough to call 911.

Our sources say in addition to cutting her right forearm, Paris had taken a large number of Motrin pills.

We're told once Paris was taken by stretcher to an ambulance and then transported to a nearby hospital, she was placed under a 5150 psychiatric hold for 72 hours.

She received "numerous stitches" for the cut.

As for the suicide note ... we do not know what she wrote.

TMZ broke the story ... officials first responded to Paris' home in Calabasas around 1:30 AM Wednesday morning.