We're cautioned not to tug on Superman's cape, but it's apparently fine for the Man of Steel to taunt Shazam.

During one Shazam! star Zachary Levi's recent Instagram livestreams, Superman actor Henry Cavill piped up the comments to ask, "Who's your favourite Superhero?" When Levi noticed the question from Cavill, he called it out and responded, "yooouuu cheeekyyy."

Hahahaha! @henrycavill yooouuu cheeekyyy...

A post shared by Zachary Levi (@zacharylevi) on

It's been rumored that Cavill's Superman could make a cameo in David F. Sandberg's Shazam! Whether the Man of Steel could play mentor to young Billy Batson or appear only in a brief cameo obviously remains to be seen.

RELATED: Shazam! Director Reveals An April Fools' Day Trailer

While the movie's logo has been revealed, an official photo of Levi in costume has not been released. However, fans have reacted to leaked set photos, and, during a livestream Q&A, Levi gave a blunt response to one person who wasn't happy about the design. "I think any of you people out there who are still hung up on what the suit looks like are just wanting to be angry for angry’s sake," Levi said.

RELATED: Zachary Levi's Shazam! Costume is Actually Perfect

Director David F. Sandberg’s Shazam! stars Zachary Levi as Shazam, Asher Angel as Billy Batson, Mark Strong as Doctor Sivana, Grace Fulton as Mary Bromfield, Jack Dylan Grazer as Freddy Freeman, Ian Chen as Eugene Choi, Jovan Armand as Pedro Pena, Ron Cephas Jones as the Wizard and Cooper Andrews and Marta Milans as foster parents Victor and Rosa Vasquez. The film arrives April 5, 2019.