Hi!  First time posting, so hope this is correct.  I've been searching for a specific gen story that I read within the last 2 months (thought I had it bookmarked) regarding a college student's POV on Badass!Sam that was absolutely hysterical.

Basically, Sam and Dean were posing as FBI on a case (haunting, I think) at a college.  Dean's cover was blown, and three college students locked him in an abandoned part of an old school building as a joke.  When Sam realizes Dean is missing, he's frantic.  He finds and intimidates one of the students into helping him find Dean.  The student is scared of Sam, and becomes even more scared as the story progresses (close to the end of the story Sam kicks down a door to get to Dean, and the student's POV is that Sam didn't really kick down the door -- it just voluntarily splintered open because Sam was that scary).  I've searched the archives from 2008 onward because although I read it within the last 2 months, it may have been written earlier.  Any help will be greatly appreciated!  Thanks.
 

ETA:  FOUND!  by Marlowe78 (thanks, you are awesome!).  Link in comments.