Haddock's Eyes or What things are called.

The name of the song is called 'Haddocks' Eyes.'"
"Oh, that's the name of the song, is it?" Alice said, trying to feel interested.
"No, you don't understand," the Knight said, looking a little vexed. "That's what the name is called. The name really is 'The Aged Aged Man.'"
"Then I ought to have said 'That's what the song is called'?" Alice corrected herself.
"No, you oughtn't: that's quite another thing! The song is called 'Ways And Means': but that's only what it'scalled, you know!"
"Well, what is the song, then? " said Alice, who was by this time completely bewildered.
"I was coming to that," the Knight said. "The song really is 'A-sitting On A Gate': and the tune's my own invention."

(from Lewis Carroll, Through the Looking Glass)

Once you have the ability name something, even names can have names and then it's turtles all the way down. Once you have the ability to point, you can point at the pointer. Like the mirror test, understanding pointing doesn't guarantee you the ability to grasp all the nth-order pointing.