And Dean feels bad, like there was something he could've done to stop Toby from having to see it.

"You should go back to your apartment," Dean starts, closing his eyes and resting against the car. Maybe if he closes his eyes he won't see the zombies. Metaphorical zombies that may or may not exist in the cemetery. Why is he hanging out in the cemetery again?

"Don't tell Sam." And the neither of you should have to deal with this is left unsaid.