"You know in School of Rock when I sing a part of that monstrous Led Zeppelin jam 'Immigrant Song' and it's super bitching and like the raddest part of the movie?" Black said on Instagram.

"Well, it's come to my attention that someone kind of stole that chunk of our movie and put it in their movie.

"That's right. I'm talking about Thor: Ragnarok. Totally bit our style – totally poached our jam – and now they're parading around town like they thought of it. Well, you don't get to do that and get away with it, bro.

"I'm calling you out, Thor. This is a challenge. I challenge you to a battle. A battle of the Jams."