My favorite was my friend and I seeing RENT.
Her: "Wow they must be really tired."
Me: "I guess. Yeah it's tiring."
Her: "How do they learn all those lines and songs?"
Me: "Ummm... well they rehearse and do the show a lot."
Her: "Oh. So what show are they doing tomorrow night?"
Me: "Excuse me?"
Her: "What show are they doing tomorrow?"
Me: "What are you talking about? They're doing the same show."
Her: "What? No. They have to perform the other shows in this theatre tomorrow."
Me: "No they don't. All these people that were just in this show are in the same show again tomorrow. Other people are in different shows. There are more than one Broadway theatres."
Her: "You mean every show performs every night? In different theatres?"
Me: "YES."
"This table, he is over one hundred years old. If I could, I would take an old gramophone needle and run it along the surface of the wood. To hear the music of the voices. All that was said." - Doug Wright, I Am My Own Wife