One day after school, I looked out the window at my house and then I saw a bright light. I thought it was an airplane so I went outside and looked.  It was a UFO and there were billions of big green aliens coming out of the ship!  I slipped on board unseen.  They flew out of the ship on hover boards.  They all look weird so I got up and followed them. One came over to me and said hi.  I said hi back and then they ran!  They got back into their ship and flew into space, back to their home planet.