The innevitable zombie like stupor that will develop after pulling an all nigther. Common symptoms include: coffee dependency, twitchy eyes, hallucinations, small piggish eyes and a vacant expression. Usually caused by procrastinating.
Rob: Man, your eye is twitching like crazy.
Billy: it's just the damned post-all-nighterism. I haven't slept in a day, but i managed to learn the bio book i bought yesterday for the final today.