Dean Winchester's God Hole

First off I don’t think it’s entirely crazy to say he would indulge in eating a few monsters, especially in earlier seasons. From sniffing dead bodies and his hunger being for raw meat I think there’s a lot of interesting potential there.

Starts slowly like when he explodes people and gets blood all over himself he licks his lips, licks his fingers ect. OR he sees blood and licks to to determine what kind of monster it is. Slowly turns into eating chunks of flesh after they kill a bunch of monsters because he’s curious. Dean and Sam scold him but are pretty desensitized to the gore in of itself so it’s more in a “dude, don’t do that. It’s a monster. Gross.” Way and not in a horrific “oh my god what are you doing?!” Way. Because it’s castiel. He’s a weirdo.

and s2 is him preparing to "go on his motorcycle trip" (we see him drive in w no helmet, there's been at least one other mention of his bike)