Commence psychological breakdown
What?
Back To The Future, where Marty McFly calls himself Darth Vader in front of his terrified father, while pretending to be an alien.
Oooh, ok, that’s hilarious. Forgot about that.
Yep! Sounds like it’s time for a rewatch!
It was at least partially a deleted scene actually? I’m not sure anymore either… www.youtube.com/watch?v=BaYADHcpdng
Back to the Future Extended Scene - Darth Vader (1985) - Michael J. Fox Movie HD

YouTube
The part that was actually in the released movie ends at 0:45. (You can also tell by the fact that the audio/video very obviously changes to daily footage at that point.)
Dailies - Wikipedia

If you can’t quote every line from memory, clearly you need to watch the whole trilogy again.

That is a fair argument.

Goes to pop some popcorn