Demi Lovato does not want to talk about Mariah Carey!

The brunette singer's recent behavior on social media has been super erratic, but she looked looked downright pissed at LAX on Thursday when she dodged questions about her short-lived social media break earlier this week. She does not look happy about being asked about her feud with Mariah Carey!

Other than wearing a grumpy attitude, the newly single singer wore a vintage AC/DC tee, ripped jeans and stiletto heels. The 23-year-old accessorized the rockin' look with huge diamond earrings and a $20K signature orange Hermes Birkin bag.

We can't blame Lovato for wanting to get out of Los Angeles -- it's been a whirlwind few days for "Confident" singer on social media. Yesterday, the "Heart Attack" singer re-joined Twitter after quitting social media for 24 hours following an online spat with diva Mariah Carey.

On Wednesday, she tweeted, "F—k this.. I'm back bitches. And I'm coming back more honest than ever." That line was followed by three emojis: a sunglasses smiley, flipping the bird and a devil.

In case you missed it, the former Disney star ignited a feud with Carey last week, after commenting on a meme and accusing Mimi of being a mean girl. She then took to Instagram to explain why she said what she said, writing, "This is why I posted what I did. Jen[Lopez] keeps it classy but I'm not afraid to say sh*t. The woman is mean for no reason. Extremely talented? Yes. Superhuman? Possibly. Unnecessarily rude? Absolutely."

Lovato then received significant backlash from the Grammy winner's fan base, likely prompting her to write on social media. "But why do people actually give a f**k what I say?? like if you don't care the gtfo haha," wrote the singer. "That one time I started my own charity providing mental health care for people who can't afford it and this is what y'all talk about. And people wonder what's wrong with the world. Pay more attention to good than bad."

Clearly the Internet went crazy -- and she'd had enough. On Tuesday she wrote that she was off of social media, tweeting, "Damn I gotta quit sayin s**t. Bye Twitter. And insta. I like snapchat cause I don't have to see what some of y'all say. Follow me if you want: theddlovato."

Maybe she should actually take a break from social media and keep quiet -- like she did at the airport! A drama-free life is good for the soul!