[derbOac]

It's funny to know this is a dream theme that others have. It's not the only recurring nightmare theme I have but it's a major one. You're right that it's just that I forgot to attend or something, like I just totally forgot I was enrolled for the course.

In my case, there's some real-life precedent for it. I enrolled in one course in undergrad, and dropped it right away my first week or so for some reason I don't recall. Toward the end of the semester, before finals, I found I was still enrolled, but had never set foot in the classroom or anything.

I was sort of panicked, but went and talked to the professor, and he was fine with it. He basically verified that I never did anything with the class and it was somehow deleted from my record completely.

I still don't know why it wasn't dropped in the first week, although this was before electronic registration systems.