Usually when jeans cause a rear-end collision it's the result of the driver checking out the ass on the chick who is wearing the jeans. Not the jeans themselves.

In this Cloverfield-esque video, the fourth installment in the Levi's "Live Unbuttoned" campaign, some guy's jeans appear to have a life of their own. A pretty gymnastic life. Instead of the horror most of us would have, had we slid our legs into something suddenly alive, he seems downright proud as they leapfrog down the sidewalk and into the street, causing the above mentioned collision. I'm thinking this would have been a better ad for laundry detergent, proving mom was right when she said your jeans would get up and walk away if you didn't wash them enough.