I had a friend, who took all kinds of drugs anytime of the day. One day I was walking down the street and I saw him with a huge gash in his head. He had no idea he had a gash and didn't feel the pain from it. Can you tell me what drug he took was? I'll desc it more. He was very hyper, felt superhuman, and was just overall messed up. I'm very curious of what drug is able to produce this type of high.