How do you teach a two-hour seminar when your eye is twitching like mad?

It started before I tuned in to the presidential press conference this morning, I swear! Yes, stress does do that to a person’s eye, yes, I’m not the first to have a fluttering eyelid. Still, every time I look at my notes on international adoption it kicks up and goes into high-speed. Do professors call in sick for reasons of a sudden twitch of the eye? I wont. But if it doesn’t go away, I may have to wear a black badge. Looking like a pirate is preferable than looking like I am constantly, surreptitiously winking at the person before me.