Ah, a mysterious and intriguing query! It sounds like you're referencing something spooky or secretive about last Friday the 13th. Since you asked about "shriek" and what you did on that day, maybe you want to share a thrilling or eerie story? Would you like me to help you craft a suspenseful tale about last Friday the 13th? Or are you looking for information related to the word "shriek" and its connection to spooky events? Let me know!