This is likely to stir up some bad blood.

During an Instagram Live on Sunday, Justin Bieber reenacted Taylor Swift's epic post-Lasik surgery meltdown. The livestream—filmed in the kitchen by Hailey Bieber, of course—captured Justin mimicking Taylor's recent freak out, as he screamed, "it's not the banana that I wanted." As Hailey laughed—"that was so funny"—he kept going: "It's not the right banana! It has no head!"

As fans may remember, Taylor has a soft spot for the fruit, which was unveiled on last week's The Tonight Show Starring Jimmy Fallon. In a post-op clip taped by her mom Andrea Swift, the superstar is groggy and snuggled up in bed with a banana. "Don't fall asleep," her mom instructed, to which Taylor replied, "I'm not asleep. My mind is alive."

And though Justin's interpretation was brief, Swifities think it was chock full of shade. Soon after the video began circulating, Hailey took to Twitter to defend her husband. "I never knew I could make somebody so upset.." the model wrote. "Truly I'm so sorry you're THIS upset?! Lord have mercy I hope I'm never this upset about someone I don't know!!"

She then clapped back at a fan who has since deleted their message to the Biebers. "listen. I think it's awesome how passionate you are and how hard you ride for someone you're a fan of, it's beautiful how dedicated you are," Hailey tweeted. "If there's something I did to personally hurt you or offend you I'm sorry, it's not my intention to upset you by any means."

"but being angry at someone you don't know does nothing for you," she continued. "I know cause I been there.. all it's gonna do is make you miserable. Don't let ME of all people get you feeling that way. Trust me, I'm not worth the energy, nobody should be worth that energy!"

For their part, Justin and Taylor haven't always had the best track record

Most recently, over the summer, Justin's manager Scooter Braun acquired Taylor's entire music catalogue, a notion that she said made her "sad and grossed out."

"I learned about Scooter Braun's purchase of my masters as it was announced to the world," she wrote in a lengthy Tumblr post. "All I could think about was the incessant, manipulative bullying I've received at his hands for years."

And she brought the with receipts. The "Lover" singer attached a screenshot of Justin's 2016 Instagram post, which showed him FaceTiming with Scooter and Kanye West. (ICYMI, he's been famously feuding with Taylor for a decade.) "Taylor Swift what up," Justin wrote as the since-deleted caption.

"This is Scooter Braun, bullying me on social media when I was at my lowest point," she wrote. "He's about to own all the music I've ever made."

Following Scooter's announcement, Justin took to Instagram to defend his longtime friend.

"Scooter has had your back since the days you graciously let me open up for you.!" Justin wrote to Taylor. "As the years have passed we haven't crossed paths and gotten to communicate our differences, hurts or frustrations. So for you to take it to social media and get people to hate on scooter isn't fair. What were you trying to accomplish by posting that blog? seems to me like it was to get sympathy u also knew that in posting that your fans would go and bully scooter. Anyway, One thing i know is both scooter and i love you."

In response, Hailey commented, "gentleman."

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