No. I got woken up by a phone call this morning. "You're teaching a Perl course 15 minutes ago".
After getting out of bed, sprinting to work, turning up with no course accounts set up on the Unix server for the users, and no slides, I ad-libbed for 3 hours. And it worked.
Competence trumps slack, every time.
And yes, I do have a couple of classes I taught in mind
Ultimately I came to realize that comedy and quick thinking are no substitute for preparation and professionalism.
--Nat