Who knew? This is the way the world ends---neither with a bang nor a whimper but with cleavage. As an inveterate womanizer, Dean appreciates the irony even as he thrashes and gasps in vain for air that doesn't come. Sam was knocked out by their quarry when she got the drop on them a few minutes ago, and Dean regrets that he'll never get a chance to laugh with his brother about this misadventure. After everything they've beaten---the spirits and vampires and evil dead---he's going to be suffocated by the mammary endowments of a possessed three-hundred-and-fifty-pound mud wrestler named Trixibelle.