pirates
The Codex: X
ABCDEFGHIJKLMNOPQRSTUVWXYZ


X

X marks the spot

A group of pirates examines a treasure map with an X.

A group of pirates examines a treasure map with an X.

"This map says X marks the spot, but I be seein' no X's afore me."
Pooped Pirate[src] (pre-2006 revamp)

A phrase meaning you'll find what you're looking for under an obvious sign for it. It is usually used when looking through a treasure map.