1. The intense practice of prolonged sleep deprivation until the point of insanity; practiced by students preparing for any significant exam or due date; typically utilizes any means necessary to stay awake (e.g. caffeine, vitamin-B complex supplements 5hr energy solution, adderall, or even crack cocaine);
"Dude, I just pulled an all-nighter..."
"I'm about to crap my pants... I have to take this final in an hour, and I don't remember shit from the all-nighters I pulled this week."