Rihanna is a badass (or at least that's what she wants us to believe) but there's one person whom she definitely does give a phuck about -- her mom.

"I'm not afraid of any person in this world, but my mother, I'm terrified of her," she tells ELLE UK (via The Sun). "She called me two days ago and reeled me in about two naked pictures Melissa [Forde] put up on Instagram – a sneak peek from a photo book she's making about me."

According to RiRi, her mother exploded when she saw the images.

"She went crazy on me," the potty-mouthed singer explained. "I was, like, embarrassed. I felt like I got my ass whipped in front of my class at school. She humbled the fuck out of me."