Mariah Carey says she has no idea where her husband is half the time ... but she knows where most of her nannies are -- the unemployment line.
A champagne-sipping Mariah stumbled through a bizarre radio interview Wednesday, making it sound like her marriage to Nick Cannon is loose as a goose.
She also explains why she fires her nannies all the time ... think Hand that Rocks the Cradle.
Here's the best part -- She brought in her own lighting team ... FOR A RADIO INTERVIEW.
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