"A bold choice," Satan said, humming in approval. Then he brought the knife down on Sloth's pinkie finger.
The knife went through his flesh easily enough, but lodged in the bone with a wet thunking sound. Satan used the knife to saw at it, the relatively fragile bones of Sloth's pinkie eventually cracking and giving way. And then Sloth's pinkie was completely separated from his hand, looking small and a little pathetic.
"One down," Satan said, reaching up to pat Sloth on the head. "Two to go."