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WATCH: ARIANA'S GRANDMA NOT AMUSED WITH HER 'RACY LYRICS'

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February 9, 2017

Ariana Grande performed in Vegas this past weekend with her grandma and brother sitting right in the front row.

Her brother, Frankie, was snapchatting, dancing, singing along, and generally enjoying himself. Her Grandma “Marjorie” a.k.a. “Nonna” (Italian for Grandma) was not so impressed. 

Her grandma covered her mouth and looked stunned as her granddaughter sang, "Don't you know I ain't f***ing with them good boys?" and "Ain't you ever seen a princess be a bad b***h?" 

I bet she grabbed Ariana by the ear backstage and gave her a good talking to after the show…ya think?  Haha!  Check out the video of her grandma below: