A man hears of this and decides to test if this is true.
He asks the Native American ‘What did you have for breakfast 30 years ago?”
The man is suspicious of this; he could have just made that up. However, he does not want to challenge him over this, so he leaves.
20 years later, the man goes into a bar and sees the same man sitting there. He recognises him, so raises his hand and asks him “How?”
“Scrambled” the native replies.