Ancient Egyptian mythology:

"Oxyrhynchus, the 'sharp- nosed fish'[...] According to legend, this fish ate the phallus of Osiris when the god’s body was cut into pieces by his brother Seth. Isis, as 'Abtu, Great Fish of the Abyss,' was identified with the penis-swallower. The fish cult spread to many parts of Egypt."

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Inspired by this, we have decyphered a hieroglyphic inscrption, and discovered it to be an ancient Bronze-Age-Pan-Alley Pop-Tune from 1902 B.C.E.

The Oxyrhynchus Rag
by Sneferu Von Tilzer

Friday Night in Egypt, don't know what to do?
Amen-ho-step over here, come learn a dance that's new.
It's the finest raggy dance, if you'll let me brag,
A fishy thing they call the Oxyrhynchus Rag.

First you wriggle all around just like a pile of squids,
Then do the vulture-trot beside the pyramids,
Everyone rush forward like a locust swarm,
Sway like a papyrus raft, caught in a storm.
Turn your chest forward and your face in profile
And throw your genitalia into the Nile.
When a fishy eats it you do the slow-drag.
And that's the Oxyrhynchus Rag
Sweet Isis
Do that Oxyrhynchus Rag!