the diarreah excuse is priceless... and I do realize it's not merely an excuse -- it's not an uncommon reaction to anxiety.

I have a friend who is a trainer, and that happens to her CONSISTENTLY right before she has to teach a course she hasn't taught before. I feel so bad for her. How disatracting to have to be in the front of the room, with everyone staring at you, and feel your stomach start gurgling...

Ok, so in light of all that, I dont' think you should sweat it. You're not going to get picked. I've sat waiting to get picked for Jury Duty twice, but never got picked -- mostly because they always call way more people than they actually need -- they aren't desperate for jurors, so I wouldn't anticipate them pressuring you in ANY way.