Green Swamp Monster

I was walking to school when something weird happened. There was this kid in a Green Swamp Monster costume(At least that's what I thought the costume was) jumped out of the bushes. He started blabbering,"Battle Me for I am a pokemon master." I said back," Green Swamp Monster you are crazy! He said," What?"" You are loco" I said. "Battle me or face my barf!" He said. I said,"Swamp Monster go home!"" I can't", he said. Why? "I was banished."He said. Well go to the place you stay. He left to go his green swamp.