President Lincoln and "his speech"

So it's the 4th of July night and all the dead presidents are gathered around a campfire having a party.  They're drinking and eating and just generally having a grand ol' time when President Washington puts President Lincoln on the spot.

"Hey, heyyyy, Lincoln, do that thing you do!"

"What now?  What thing?"

"Lincoln, do the thing!  The speech.  You know, the thing!!!!"

"Ohhh, yeah, the speech.  Yeah, that thing.  Nah, I can't.  Can't remember the words."

"Whaddya mean you can't remember the words???  It's the speech; you've said it a million times!!!  You've got that, like, burned in your brain, right?!!"

"Well, yeah, normally, sure, I've got it memorized, but that was four s'mores and seven beers ago!!!"