 CONT: When The Dude is at Jackie Treehorns and he rubs the pad of  paper with a pencil revealing Treehorns drawing of a naked man, The  Dude tears the page off the pad and quickly crumples and shoves the  paper into his pocket. Later while in the Chief of Police of  Malibus office and the Chief is going through The Dudes wallet,  the same paper he tore off of Treehorns pad is neatly folded in the  wallet, with no sign of previous crumpling.