agent provocateur agitator agitprop bad boy booger buffoon bugger catalyst cutup demagogue devil elf enfant terrible exciter firebrand fomenter funmaker hood hoodlum hooligan imp incendiary inciter inflamer instigator joker jokester knave little devil little monkey little rascal minx mischief pixie practical joker prankster provocateur provoker puck rabble-rouser rapscallion rascal ringleader rogue rouser rowdy ruffian scamp scapegrace seditionary seditionist troublemaker urger wag