What is Screemo?

I and Tim went to the practice room in Roso, the Art building, practicing from 9:00pm to 4:00am. I played the guitar and Tim played the drum. I scream a lot and now, my thrort hurts. We played 60's stuff like "the house of rising sun", "my back pages" "hardy gardy man" and "twist and shout." and Nirvana and Green Day too. It was all good, We should keep doing this.