Specific fic - Sam coming out to Dean & John during succubus/incubus hunt
I remember reading a fic years ago where John, Dean, and Sam were hunting for a succubus/incubus, and John warned Dean that he shouldn't go up against a succubus, and then there was an incubus or something and Sam said that "him going after the incubus was as bad an idea as Dean going after the succubus", or something along those lines. Anyone have any idea what that fic is called?