As the prosecutor, it is your job to reach a final verdict and sentence the reprehensible felon, while His Tyranny watches in silence and submits grim approval.
But you take pity on this miserable bureaucrat. You are feeling merciful. You will give him a fighting chance.
You will flip a DOUBLE-HEADED TROLL CAEGAR to decide his fate. You do this quite often when making important decisions. Kind of like Batman's nemesis, Two-Face. Or that guy from No Country for Old Men. It turns out there are lots of badasses out there flipping coins. But those are Earth things and you've never heard of them. It's safe to say you borrowed this gimmick from one of the many, many troll things out there that's got hard boiled dudes flipping coins for major stakes. You base the habit on whichever one smells the most badass.