There's a joke about shift registers and delay-line memory but you'll have to wait till it comes back to me.
That's definitely part of the joke... But no worries I'm sure whatever he said was very intelligent.
This is going in my Rare and Incredible memes folder. I shall look upon it occasionally, and savor it as one might a fine liquor.
I don't usually autopsy jokes, but since the punchline is itself both analysis and humor, here we go: