fauxthusiasm
To express joy for something you think you should care about, but don't really.
Man: "The Penguins are up 2-0 after the first period!"
Woman: "Ummm... Yayy?"
Man: "Well done! You fauxthusiasm is appreciated."
Woman: "Ummm... Yayy?"
Man: "Well done! You fauxthusiasm is appreciated."