How did Larry's homework get in the Dude's car?

Posted by Velocitor1729@reddit | lebowski | View on Reddit | 117 comments

The cop at the impound lot suggests somebody may have slept in the car, or used it as a toilet. Maybe that person grabbed the homework out of nearby trash, for toilet paper.

Or maybe the Nihilists had it for some reason, when they stole the car.

Any other theories?