system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Who is Davy Jones and why is the bottom of the sea referred to as his locker?
gpt
To understand, you need to know how language and slang has changed.

Duffy used to be a word meaning ghost.

Jones used to just mean some random person.

And locker was . . .  Well, still a locker.

Originally, the term was probably Duffy Jones's Locker, which meant the grave of all the unknown ghosts of people who had died at sea.

Over time, Duffy became Davey, and so the original meaning of a nameless forgotten ghost was confused.

So what originally meant "The graves of the forgotten" became "The grave of this one guy."