Kiwi actor KJ Apa has taken to Instagram to throw shade at his Riverdale co-star Cole Sprouse by way of a meme - and the star-studded response has been hilarious.
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The 21-year-old posted a side-by-side picture made by a fan that shows Sprouse and Apa at 17 - the age that their characters are in the show.
"Man... I would have absolutely crushed you at age 17. Crushed," Apa captioned the post.
"And I still would now," he added in a comment below.
Sprouse, not missing a beat, replied: "You wouldn't have even survived the weight of my wallet bitch."
Sprouse began his acting career at the tender age of eight-months-old, and reportedly made US$20,000 (NZ$29,000) per episode starring in The Suite Life of Zack and Cody as a teenager.
Many of the Riverdale cast members appeared to be enjoying the exchange, weighing in with their own threats.
Skeet Ulrich, who plays FP Jones, chimed in: "Neither of you would have touched my mullet."
"I would have squashed you scrubs at the same time with both hands tied behind my back," wrote Charles Melton, who plays Reggie Mantle.
Lili Reinhart, who plays Betty Cooper, didn't hold back either. "I would have pummelled both of you p**sies," she wrote.
Even Kiwi songstress Lorde, who has previously praised Apa's Riverdale performance, had something to say.
"Wow, I'm dead," the 'Green Light' singer commented.
Apa may have hit the big time with his role in Riverdale, but he still gets nervous around Hollywood's finest.
Earlier this month, he shared a snap he had taken with Game of Thrones actor Jason Momoa, with the caption: "Starstruck!!!!! Lmao."