In case anyone else has ever wondered: IDDQD stands for Id Delta Quit Delta, a fraternity created by DOOM programmer Dave Taylor who released that if you drop

In case anyone else has ever wondered: IDDQD stands for Id Delta Quit Delta, a fraternity created by DOOM programmer Dave Taylor who released that if you drop out or quit a course you get a statistically-better final grade than you would by failing the course. Of course, you still end up not achieving a degree, hence when used in-game it shows "Degreelessness Mode" activated.