What you are when, at the crucial moment, a piece of software or hardware invariably and inexplicably fails on you. Your blood runs cold. You break into a sweat. You rage against the machine, but it's no use. That program or piece of machinery that has worked perfectly fine up until now has chosen to malfunction at the exact moment you needed it most. You're compufucked.
"Fuck ... I finished the essay with ten minutes until the deadline. I clicked to print so I could run up to campus quick and hand it in. But then the paper all jammed and shredded and now it's all stuck deep inside the printer and it won't work any more. I failed the class."
"Dude ... tough break. You got compufucked."