Comedic band Paul and Storm performed their goofy song Write Like the Wind (George R. R. Martin) on stage at the W00tstock 5.0 event at this weekend’s San Diego Comic-Con. As its title suggests, the song pokes fun at nerd favorite author George R.R. Martin.

But in the middle of their performance, GRRM himself slowly walked onto the stage. The drummer quickly ran, but the lead guitarist didn’t notice him until it was too late.

GRRM simply took the guitar, dropped it on the ground, and stomped it to piece, causing the crowd to cheer louder and louder.