(Coworker lady is dancing to something on her headphones in the break room as I walk in)

Josh: (points to ear) "What are you listening to?"
Lady: (takes out earbud) "What?"
Josh: "What is it you are listening to?"
Lady: "Oh, I think... Fergie, and somebody else."
Josh: "Ah, I don't think I've listened to them."
Lady: "I think it's a remake of a song I used to listen to... maybe Dirty Dancing?"
Josh: "Oh, from the movie?"
Lady: (blank look)
Josh: "Or... the act?"
Lady: "I don't know. I just know they do the (singing) 'It's... been... the time of my life' part, and then it gets all crazy."
Josh: "Oh, that Fergie." (walks off)

Every conversation at work.