About 56 hours while studying for a Japanese final.

I'd done average all semester and left the exam as my last final. I'd been existing on 2-3 hours for sleep a week prior to my binge study study session.

I decided to memorize the book during that period of no sleep. Got through it just before my exam started.

My teacher either took pity or I succeeded in my quest since I got a B+ on the exam, but written and oral.

Went back to my dorm and passed out for almost 36 hours. Woke up to the Dean throwing open the door.

I'd slept through the required departed time from the dorm at the start of break. Turned out to be a good thing because Snowmageddom had hit while I was sleeping and a bunch of students that had left got trapped on the highway and had to be rescued.

Dean was trying to account for all students and when she realized no one had heard from me and my parents couldn't reach me, they decided to check my dorm as a last ditch effort to find my travel plans for break. The RA had stopped by a day earlier, but apparently didn't see me under the covers and reported me not there.