LoL. Wyrd sisters ... and I love Fry's narration (I'm listening to the audio while reading) - more Python that Pratchett but it works well and made me laugh:
As Perseus approached the mouth of the cave he slipped on the cap that Hermes had given him, the Hood of Hades. The moment it was on his head, the long shadow that had been striding along the sand beside him disappeared. Everything was darker and a little misty with the hood over his eyes, but he could see well enough.
‘I won’t be needing these,’ he said to himself, leaving the scythe, satchel and shield on the sand outside the cave. He followed the murmur of voices and a glimmer of light through a long, winding passageway. The light grew brighter and the voices louder.
‘It’s my turn to have the tooth!’
‘I’ve only just put it in.’
‘Then PEMPHREDO should let me have the eye at least.’
‘Oh, stop moaning, ENYO …’
As Perseus entered the chamber he saw, held in the flickering light of a lamp that hung over them, three fantastically old women. Their ragged clothes, straggling hair and sagging flesh were as grey as the stones of the cave. In the bare lower gum of one of the sisters jutted up a single yellow tooth. In the eye socket of another sister a solitary eyeball darted back and forth and up and down in the most alarming manner. It was just as Hermes had said, one eye and one tooth between them.
A pile of bones lay heaped on the floor. The sister with the tooth was gnawing the side of one, stripping it of its rotten flesh. The sister with the eye had picked up another bone and was inspecting it closely and lovingly. The third sister, with no eye and no tooth, raised her head with a jerk and sniffed the air sharply.
‘I smell a mortal,’ she shrieked, stabbing a finger in the direction of Perseus.
‘Look, Pemphredo. Use the eye!’