As of yesterday, sideshow school was in session by the seashore. Lasting only one week, Sideshow 101 introduces the student to "Fire Eating, Snake Charming, The Human Blockhead, Sword Swallowing, Magic and More," according to the school's website. The Daily News checked in with some of the students, who ran away from their own lives to join the circus for the week -- some from as far away as Oklahoma City.They started by jamming nails......