In the scene with the Dude, Walter and Donny at the alley bar, there is a guy sitting behind and between Donny and Walter. The guy never moves an inch during the scene, and the scene continues with the Dude and the Narrator and the guy is still sitting, same position, never moved an inch. There is a short pan across at one point and you can see his silhouette and the newspaper he is holding moves, but he does not. The guy is 100% a mannequin. If you watch his head position in relation to the bowling pins behind him, his head never even wavers. Completely frozen.

Am I late to this party? Has this been talked about before?