This is a video of a young Leonard Nimoy deepfaked as young Spock (originally portrayed by Zachary Quinto) in the 2008 Star Trek reboot, and talking to his older self. Ha, I talk to my older self all the time, even though Doc Brown is always insisting I shouldn’t for fear of creating a time paradox that sets off a chain reaction that unravels the very fabric of the space-time continuum and destroys the universe. That guy’s an idiot. “Doc Brown?” No, older me. He doesn’t even bring me winning lotto numbers.

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Source: Geekologie – Young Leonard Nemoy Deepfaked As Young Spock In 2009 Star Trek Reboot