The longest and most boring play
If I wrote a play where actors show up with chairs, sit down, and eat popcorn while commenting on the audience, would you watch it?

The actors will say that it's the longest and most boring play they've ever seen, and eventually all leave one by one, unless the audience bows to them, in which case they'll clap.

If an audience member jumps on stage, the play will be considered a total success  xD

...but the actors will say something like, "WTF, nobody told me the actors were going to join the audience!"