The BLACK ONYX ring upon the little finger of so many PUBLIC SCHOOL BOYS...I have always wondered what it meant and now I can guess two things:

Firstly the man is signalling that he is a 'pupil in need of correction' - namely a masochist....

Secondly, that he is a programmer who uses that ring to bring slaves under control - the ill cult used to use BLACK BUTTONS to do this...to make a disobedient alter 'disappear' down the black hole...

Perhaps both, eh? Knowing the ill cult...