S6E5: The Duh-Vinci Code
I'm trying to deduce the function of da Vinci's lost invention.
Not even a card.
He might have hidden a clue in one of his other works.
Ergo, I sent Bender out for a copy of The Last Supper.
BENDER: I'm back!
Everybody at Kinko's was an idiot, so I just brought the original.