It happens in every production of Hamlet - you reach Act 3, Scene 1, and you can hear the audience hold it's collective breath for a moment... followed by the suppressed sound of hundreds of people trying very hard not to say the words along with the poor actor on stage.
It is the "to be or not to be" speech.
Similarly, in every production of the Sound of Music you can hear people trying very hard not to sing along to "Do Re Mi".
It's the same thing.
Phew. Thank goodness that's over.
Tune in next week for the Murder of Gonzago, in which there may or may not be goats!