I wonder if they will miss me at work for a couple of hours?
I know with the concentrated brain power available on the boards we can come up with the right excuse.
EG: {holding your ears vaguely} Everything is sounding bad lately - I've got an appointment with Dr. Lofft - will be back shortly.
or
I think I'm coming down with the 'Axiom' flu. It's going around - I read about it on the internet. I'm going to take a couple of hours off to deal with it.
You get the picture. Now, let's see what we can come up with that will fly!