As a full-round action, a harionago can emit a scornful laugh ringing out in a 60-foot burst. A creature that hears the laughter must succeed at a Spell saving thrown or be affected as the hideous laughter spell (CL 14th), except that a laughing creature is considered helpless to the harionago. A creature that successfully saves against a harionago's scornful laughter can't be affected by that same harionago's laughter for class feature.