When your significant other has a party that will be attended by people that you either don't know, or don't care about. You don't want to go, but you go anyway to safe face and/or give the illusion that you don't hate them.
Wife: "You can't do that Saturday, we have that Scrubs-themed costume party at the Smiths' that evening."
You: "I'll go, but I'm only making a political appearance."
Coworker (sarcastically): "So, I'll see you at the holiday party, eh?"
You: "I dunno, I overheard my boss talking about possible promotions. I think it's worth at least making a political appearance."