Rings on all of his fingers on his right hand?

Question

Why would he have skull rings on all his fingers on right hand only? not thumb...

Answer 1

because the left hand is there for marrige and maybe it turns him on to whack off if there is something metal in his hand

Answer 2

its less conspicuous and easier to use than brass knuckles lol

Answer 3

Maybe he just like skull rings.  This is definitely a question for the ring-wearer.  Only he can answer this question.