Elfs.

I have a small gaggle of elfs in my head banging with hammers and making shoes I think. They may just be making music but the rhythm is so irregular it must be a modern experimental music the has many different time signatures going on at the same time. I'm trying to ignore it but the pounding is so constant it is getting hard. I wonder if I got a hammer and pounded back if it would stop them. Maybe I'll try that.