"Mirror, mirror on the wall, who's the best little girl of them all?" You are, Emma Watson. You are.

The "Beauty and the Beast" star was on "The Ellen DeGeneres Show" on Friday, and Ellen had her conduct a wonderfully absurd prank: Interview a stranger for the position of her own nanny, as inspired by "The Bachelor." Watson even said the word "vagine," which we cannot unhear.

Ellen piped instructions on what to say into Watson's earpiece, as the star sat down with an unsuspecting women. Watson told the woman she got the idea of having her own adult nanny from watching "The Bachelor." The woman immediately understood the reference: "Oh my gosh, Corinne?" She said it was "so awesome." Watson continued, "I started saying 'vagine,' too."

Ellen kept asking Watson to do the most ridiculous things, including to tell the interviewee, "I like to go potty alone. I don't need you to help me potty," and to laugh hysterically for an awkward length of time, then stop suddenly and just stare.

Watch it play out:The woman was such a good sport about it, and she could tell it was some kind of joke, especially when Watson kept cracking up and clearly looked like she was pausing each time for instructions.

"Beauty and the Beast" will be released in theaters March 17.

[via Us Weekly]

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