How Machine Gun Kelly and Brian Austin Green's Feud Is Heating Up With a "Childish Twist"

Bartender, we'll take an update on the Machine Gun Kelly—Brian Austin Green feud.

The battle between Megan Fox's exes appears to be heating up. Cleveland's 27 Club Coffee lounge, which MGK co-founded, has debuted a new menu item that seems to reference the Beverly Hills, 90210 alum and an insult he had allegedly made about Brian on social media last month, when the Transformers actress gave birth to her and the rocker's first baby together, a daughter.

"NEW DRINK ALERT: CHILD ACTOR MARGARITA!" read a message posted on the venue's Instagram April 4, alongside a photo of a green drink with an orange slice. "We put a childish twist on this margarita meant for those days when you just don’t wanna act like an adult. 9021-OMG."

On the coffee lounge's online menu, the "Child Actor Margarita" is described as "sour. soft. basic" and contains tequila, lime, agave, orange and green glitter.

Brian—a former child star who shares kids Noah, 12, Bodhi, 11, and Journey, 8, with Megan—has not commented on the post, nor has the actress, 32, who has never weighed in publicly on the bad blood between her exes.

The men's feud appeared to begin when Brian, 51, shared a stern message for MGK, 34, in December 2024, days after multiple outlets reported the fellow actor and Megan—who had announced her pregnancy the previous month—had broken up.

Noting that he had "no idea" about the split, the Terminator: The Sarah Connor Chronicles alum told TMZ in an on-camera interview, "Grow up. Like, she’s pregnant."

In February, he slammed MGK again on social media. Responding to a report that alleged MGK had "called out" a "narrative" about his relationship with Megan, Brian wrote on his Instagram Stories in a now-deleted post, "Bro. Just be honest for once in your life. Stop caring so much about how you're perceived that you will try and drag other people."

Then in March, Brian shared an apparent Instagram DM exchange with MGK, who allegedly wrote to him, "Stop asking when our child is gonna be born. You the FEDS. Quit calling TMZ and focus on that apology you owe me for speaking my name in public. You chose the wrong one to f--k with mr child actor. Go back to cereal commercials."

Brian laughed off the comment. "I didn't know 'child actor' was something bad," he wrote on the screenshot, adding several laughing face emojis. He then appeared to reference Leonardo DiCaprio, also a former child actor, writing, "Leo, careful. He may be coming for you next."

Brian's fiancée Sharna Burgess—who shares son Zane, 2, with Brian—soon weighed in. "That was about the equivalent of a dog p--sing on its territory making it known it's back in the area," she wrote in a post to her Instagram Story. "So eloquently put too. Bravo."

Look back at Megan, MGK, Brian and Sharna's blended family photos...

Brian Austin Green enjoyed a lazy morning snuggled up with kids Noah, born in 2012, Bodhi, born in 2014, and Journey, born in 2016, who he shares with ex Megan Fox.

After Brian and Megan split in 2020, the Beverly Hills, 90210 alum found love with his Dancing with the Stars pro partner Sharna Burgess. The two welcomed son Zane in 2022, and announced their engagement the following year. 

Sharna sharing a tender moment with Zane and his older siblings. 

Meanwhile, Machine Gun Kelly—whose real name is Colson Baker—welcomed daughter Casie with ex Emma Cannon in 2009. He went on to get engaged to Megan in 2023.

Despite her commitment to co-parenting, Megan has said it's not always a walk in the park. “It’s hard to not feel obligated to be with them all the time or to constantly feel like I’m not doing a good enough job,” she admitted to Glamour UK in 2022, “but I’m also separated from their father. So, I can only have them half of the time. That just is what it is.”

Brian's blended family includes his son Kassius, 22, whom he shares with ex Vanessa Marcil. The actor posed with Sharna and all five of his kids for a festive family photo in December 2023.

For Megan, motherhood keeps her grounded. "When I step back, I know how connected I am and I’ve always been and how present I’ve always been,” she told Sports Illustrated Swimsuit in 2023. “I see the reflection of the type of mother that I am in their eyes and in their behavior."

In 2022, the Jennifer's Body star posted a rare photo alongside the "Emo Girl" singer and his daughter, taken at his 27 Club Coffee shop in Ohio.

The hitmaker turns to his daughter for advice on his music. "I trust her opinion more than I trust my own now," he said on The Kelly Clarkson Show in 2021. "Like, she has her finger on the pulse of what's hot, or if I'm doing a song and it's the right one, she'll confirm it."

In honor of Mother's Day 2024, Brian paid a loving tribute to Sharna. "You are an incredible mother and fiancée," he wrote on Instagram, "and we all love you to death."

Megan rarely features Journey and his siblings on social media—for one very good reason. "I knew when they were very young, I wanted to try to protect them however I could, especially limiting their exposure to the internet," she told Glamour UK in 2022. "So far, we’ve done a really good job and we maintain their innocence in a lot of ways, but I know I can’t protect them forever."

Brian's golden rule for co-parenting? Picking his battles. "People make a mistake of thinking that they're gonna do things so the separation doesn't affect the kids," he told E! News in 2024. "Of course it's gonna affect the kids. The only choice you have is how it affects the kids."

Likewise, Megan makes a point not to speak ill of her kids' father around them. "I don't let anything in my energy like that when I'm around my kids," she said on The Drew Barrymore Show in 2023, "because if I don't accept and love their father, I'm rejecting a part of them, because he's a part of who they are always.

Brian snapped a pic of his brood having some fun in the sun in Malibu, captioning the Instagram post, "Great day!!"

MGK—pictured with Casie at the Kids' Choice Awards in 2019—credited his daughter with helping him get clean after she told him she knew when he was high. "That was step one for me," the musician, who has been sober since August 2023, said on the Million Dollaz Worth of Game podcast. "As a father and as a man, to be the father I wish my dad would have been, I have to break this generational curse for my kid."

Sharna has thanked Brian's kids for preparing her to be a mom. "I got to test out motherhood with these guys," she said on the Quite Frankly podcast in 2023. "I got to learn things and grow with them, about parenting and understanding kids ... and knowing, 'Oh my God, I think I can be really good at that.'"

In 2020, Brian was a celebrity contestant on The Masked Singer. "I was super excited for my kids to watch it with me," he wrote on Instagram, but "they fell asleep after 15 min."

No job is too big for the TV star and his mini-mes.

While Brian revealed he got a vasectomy eight weeks after Zane was born, that doesn't mean he couldn't have it reversed down the road. "If we have the space and the ability to, would we love to? I certainly would," Sharna said on the Oldish podcast in January. "But we do have four young kids in the home and life is very, very busy."

On March 27, 2025, Megan and MGK welcomed the newest member of their blended family: a baby girl, who arrived into the world with her own original score composed by the rocker and his musical pals including Travis Barker.

"She’s finally here," MGK exclaimed in a post on Instagram, "our little celestial seed."

Brian and Sharna enjoyed a sweet treat and some sweet laughs with Zion, Noah, Bodhi and Journey in April 2025. 

MGK spent quality time with his oldest daughter Casie shortly after announcing the birth of his and Megan's baby girl. 

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