San Quentin State Prison warden Ron Ditmeier wowed Monday's Tonight Show audience by displaying some of his favorite prisoners. 'Rufus here is what we call a Throat-Slashing Double-Lifer,' Ditmeier said while showing off an inmate to host Jay Leno. 'These distinctive markings mean he's a hardcore in the Crips.' The educational segment provoked peals of laughter when an Encino Wife-Beater urinated on Leno's shoulder and stabbed him in the eye with a pen. 