I was helpin my mom and aunt take apart a old couch and I was doing the fun part, hammering the wood apart. I was hammering as hard as I could and was getting into it and having fun then uh oh I swung too high and the nail remover part of my hammer hit me on top of my head hard. It didn't hurt too bad but yet I bled a bit, and I thought I was going to pass out. My aunt checked my head it's nothing serious just a good scent place. But still I think I may gotten a concussion from it and I still feel funny and my sight a lil wonky. I still continued on and got the job done though but I don't think I'll be hammering any anytime soon.
