"He was loud and excited and by the time M was seated in the driver's seat he was literally almost in the car with us. I thought all of this was cute and exciting until he said, 'Ariana is sexy as hell man, I see you, I see you hitting that!!!'
"This may not seem like a big deal to some of you but I felt sick and objectified. I was also sitting right there when he said it. I've felt really quiet and hurt since that moment. Things like that happen all the time and are the kinds of moments that contribute to women's sense of fear and inadequacy.
"I am not a piece of meat that a man gets to utilise for his pleasure. I'm an adult human being in a relationship with a man who treats me with love and respect."
The Side to Side singer then ended her post with: "We are not objects or prizes. We are QUEENS."
But some Twitter users accused Grande of being a hypocrite for complaining about the comment, given her songs and music videos are highly sexualised.
And that didn't impress the young star one little bit, who fired off a series of tweets in her defence.
"Seeing a lot of 'but look how you portray yourself in videos and in your music! you're so sexual!' .... please hold.. next tweet... I repeat," she wrote.
seeing a lot of "but look how you portray yourself in videos and in your music! you're so sexual!" .... please hold.. next tweet... i repeat