Everytime my wife is singing a song, I always try get her with a particular line from a Family Guy episode. One where Stewie & Brian are on the road to find Brian's mother. And they're standing by the side of a road when Brian starts to sing a song.
Stewie: Who sings that?
Brian: (I forget the name given)
Stewie: Yeah let's leave it at that.
In our house....
Me: Who sings that?
Wife: Shut it!
I can never get her. Dang!