Leon Bennett / Stringer

Our favorite Instagram battle of the week - Jack Black v. Chris Hemsworth

It's on. Ohhhhhhhhhh it's ON!

Jack Black noticed that Led Zeppelin's "Immigrant Song" has skipped up in popularity following the release of Thor: Ragnarok. But hang on, Chris Hemsworth and just hold your Australian horses, Jack says!

This is a challenge! #SchoolOfRagnarok @chrishemsworth @taikawaititi

197.8k Likes, 5,659 Comments - Jack Black (@jackblack) on Instagram: "This is a challenge! #SchoolOfRagnarok @chrishemsworth @taikawaititi"

Never one to back down from a challenge, Hemsworth responds on HIS Instagram account:

in response to @jackblack #schoolofragnarock #jam @taikawaititi @marvel #thorragnarok

929.9k Likes, 9,503 Comments - Chris Hemsworth (@chrishemsworth) on Instagram: "in response to @jackblack #schoolofragnarock #jam @taikawaititi @marvel #thorragnarok"

First of all, Hemsworth is incredibly handsome. So let's not discount that. Also, he mentions Pearl Jam, so another point for Hemsworth. But can Hemsworth respond with an awesome slo-mo video? Well, Jack Black sure can! The proof:

Daddy's School Of Ragnaroth from the set of "The House With A Clock In It's Walls"

137.5k Likes, 2,543 Comments - Jack Black (@jackblack) on Instagram: "Daddy's School Of Ragnaroth from the set of "The House With A Clock In It's Walls""

And the winner for the Best Comment on Jack Black's Instagram page comes from the director, Eli Roth: "#Ragnaroth FTW"