Anthrax guitarist Scott Ian has revealed a photo of his bloody finger for writing a thank you message to fans after their live performance at The Warfield in San Francisco.

Scott’s bloody finger photo showed us a recent Anthrax gig was extremely awesome and brutal for everyone who attended that unforgettable show. Here’s what he said:

“My thumb got Bungle grinded. Great first show at the Warfield, thank you! See ya again Thursday for part 2. No sleep till Brooklyn! @mrbungleofficial #theydrewfirstblood #norambos”

A fan named Crabs commented:

“Bungle Grind sounds like a skateboard trick yet to be invented! 😉”

Another fan named Masaromp made a little joke about the photo by saying:

“Have you considered hand modeling? or at least thumb modeling! that’s one textbook thumb. 👍🏻”

Check out the Instagram post below.