Hahaha, that's very funny!

Don't worry about dignity, I'm sure they have seen (or are going to see) much worse than this!

But yeah, if I didn't want to get caught loking and drooling (which I don't) I'd close my eyes. It doesn't show that you're terrified - especially if you tell them that you are just going to relax a bit while they do their job... But you'll have to ease up on the clenched fingers, lol

Cheers
Ivo