A Hammer in my Fridge

Last night, after everyone else went to bed, I opened the fridge to see a hammer sitting on the top shelf. Why was it there? I have no idea. I asked about it this morning, and no one else knew anything about it. Could it be that a hammer fairy put it there during the night? Was it a sign from God? Mr. Math Teacher seems to think that I had something to do with it since I was the highly medicated person in the house last night. It's a mystery.