Folie à Deux character's name on set. While speaking with Variety about the upcoming comic book movie sequel, actor Harry Lawtey said that Phoenix, 49, "suggested, as a joke, that we FaceTime my mum and scare her" during a rehearsal — while the Academy Award winner remained in full clown makeup for the role.

Joaquin Phoenix, the Oscar-winning actor known for his intense and immersive performances, recently demonstrated his playful side while filming the upcoming Joker: Folie à Deux. Now, you might be wondering how he did this while working on such a serious film.

Folie à Deux, recalled the time he and Joaquin Phoenix played a trick on Lawtey’s mom on the movie set. Phoenix stayed in full Joker makeup on set, even when not filming, so Lawtey said the actor played a trick on his unsuspecting mom.