A man and his family walk into a bar. Inside of the bar the man's youngest son sees a Native American sitting under a sign stating "World's longest memory". The child walks up to sign and decides to test if this sign is true.
The boy asks, "What did you have for breakfast 30 years ago?"
The Native American states, "eggs."
The young boy states that the man could have just made that up, and the family later leaves the bar.
Years later the child now grown up returns back to the same bar with his own family. He sees the same Native American sitting under the same sign.
Walking up to the Native American he states a stereotypical, "how?!"
The Native American replies, "scrambled."