As you can imagine, the Foreign Service - and Public Diplomacy work especially - forces these exact scenarios on me regularly. I've gotten pretty good at faking it and if there's wine involved, I may even enjoy a conversation.
Recently I was asked to attend a not-very-interesting function on behalf of the Front Office.
Front Office: Thanks for attending this. Just go, be charming for a couple hours, then leave.
Smart-ass friend*: Heather? Charming?
Me: I can be charming, dammit!
And so I was.
*I realized that most of the people I consider to be friends are smart-asses. I'm not sure what that says about me.