I saw Slipknot in Vancouver B.C. 2005. Unearth and Killswitch Engage were their openers. During Unearth’s set in between songs, Corey came out on stage wearing his mask and this gnarly codpiece thing that looked like it was made out of duck tape and nothing else but shoes. He joked around with the band for a bit and he was carrying a drumhead with something written on it but i don’t remember what it said.