Chris Hemsworth may be a superhero on-screen, but in real life, he's a super brother.
And he used Liam Hemsworth’s birthday as an opportunity to roast his younger brother.
The Marvel star shared a shirtless photo of his buff brother on Instagram.
"Happy birthday @liamhemsworth hopefully this is the year you finally get in shape and take care of yourself,” he captioned the photos of the “Hunger Games” actor.
But he didn’t stop there! He insisted that Liam take advantage of the family discount at the gym to get in shape.
“To help with your transformation I'm gonna gift you 10% off a @centrfit membership #familydiscount," he teased. "Love you,” he hilariously quipped.
In addition to the shirtless snap, he also added a photo of Liam surrounded by cake, flowers, and balloons. The third photo was a throwback shot to when the now-32-year-old was just an adorable toddler.
Fans took to the comment section to comment on Chris’ “generous” gift to his brother.
“This must be true brother love,” one fan noted.
Another added: “Family discount on a membership is the best present you can give your brother 😂.”
Liam was a great sport, however, taking the top-tier trolling in stride.
He responded to the actor’s “gift” via an Instagram video that was ironically filmed at a gym.
"Special thank you to my brother Chris for giving me 10 percent off on a Centrfit membership," Liam noted sarcastically.
He continued: "I mean, what a gift! The gift of health. Really appreciate it, mate. That's just the kick in the a-- that I needed to continue on my fitness journey."
While there was definitely brotherly love in the post, it was also a payback ploy on behalf of the Thor actor.
E! Notes that for Chris’ 38th birthday, Liam posted a photo alongside his other brother, Luke Hemsworth, along with the caption: "Happy birthday @chrishemsworth."
Chris didn’t miss a beat, jokingly replying: "I'm the best photographer goin round."