Walter Sobchak: Nihilists! Fuck me. I mean, say what you like about the tenets of National Socialism, Dude, at least it's an ethos.
When the Dude is in Jackie Treehorn's estate, he pencils over a pad of paper to see what Jackie wrote down while he was on the phone. He then hurriedly crumples up the piece of paper and shoves it in his wallet. Then, when we see the Chief of Police of Malibu looking through the contents of The Dude's wallet, the paper is there, neatly folded in fourths.