the grand marshal ends the homecoming parade at the front doors of the high school administration building by waving his right hand while the marching band starts then finishes the schools fight song as high school students who are dress-up in their costumes of cowboys , wizards , pirates , hollywood starlets , and scary monsters sing and cheer the last trailer that contains the football team who continue to show-off their athletic stances on the edge of the flat bed platform , striking goofy muscle poses as the females happily croon .