Cas responded by taking another hit, because it was easy---and then he put the joint out on the table, because that was hard. He snuffed it, leaving a mark on the wood.
"I can stop," he said, raising his eyebrows. "For your sake, I'll give it up for a while. All of it. All the pills and the smokes and the liquor, for your sake, Sammy. How's that sound? Would that make you feel better? Then you can see the real me."
Broken. Hollow. Full of complete and utter despair. He didn't know what he'd find if he stopped.