Who knows where Jack got the X on his face?

The 'X' mark on the side of a pirates face shows thay've saidled all the 7 seas.
And Jack has, so he has the 'X'

But Jack as also been on the Dead Sea in Davy Jones' locker so he's really been to all the seas.

There was an interview with Johnny Depp and he said that he has no idea how he got the scar, he said Jack might have just woken up one day and found that somebody had marked his face haha

May be when the black beard pierced vudo doll that was made ​​by Jack