ben cousins left court with a smug smirk on his face following a morning spent in police custody before he finally fronted court .
cousins smiled as he left fremantle magistrates court , despite the magistrate labelling him ` a risk to the public ' and warning him that he now faces a jail term for the ` serious ' offences he has committed .
cousins handed himself in to police after failing to make a court appearance over traffic charges .