Translation of Fehlbestand in German-English

Are you a man or a woman? You have no picture in your profile, and I do not know whether the user name loli2938 belongs to a man or a woman, but actually it does not matter to me. I am here for the Spanish.
Just last week a friend of mine showed me how to do these special effect, so I was focused about this word. I have been sleeping five hours a night for a week now and I am pretty tired all the time. Hopefully recovery will come soon.
What are you doing? I'm at work. It is so boring and my boss is not here. Yesterday I was here until midnight, because we had problems with the PC system. Then we ordered pizza and a few beers.