Present Day
"Why didn't you tell me?" Sam asked, glancing nervously at the… thing driving the car.
"Didn't want to freak you out," the ghost replied.
"Yeah? Well you're doing a piss-poor job."
The ghost sighed, running a spectral hand through his spectral hair. "Look, this isn't exactly easy for either of us, so-"
"How?" Sam interrupted, "where? I think I deserve to know."
"You wouldn't remember," Dean muttered, "you weren't exactly yourself that day."
OK, for anyone wondering about the chapter name, I used to watch Smallville, and every time Clark was infected with red kryptonite and did soemthing stupid/crazy, he would make everything better again by telling people that he wasn't himself. Ahh... yes, it's (hopefully) all making sense now...