I knew I'd need some situations and so I drew upon the endless creativity of my lovely wife. The following are the situations and corresponding faces in order:
1. You're about to give a speech to the PTA when someone's cell phone goes off.
2. You're a child meeting a real live superhero.
3. Your blind date is going well until you realize that you're actually second cousins.
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It seems to have turned out rather well, if I say so myself.