The worst part is that it's completely my fault - back in January, when I was looking over course design, I cleverly read the email from October that said "You're teaching Intro to Ling!" and completely forgot about the email from November that said, "Just kidding - it's the Language & the Mind course!".
So I have a course layout, syllabus, quizzes, exams, and eleven ppt lectures for a course I'm not teaching and absolutely nothing for the course I'm supposed to be teaching.
Since I have no one to blame but myself for this stupidity, I will stop having a panic attack and get to some serious course design.