A good rule of thumb is that if you have a camera pointed at you or a microphone in front of you, never say anything you wouldn’t want made public. Time and time again, people get caught saying or doing embarassing things because they thought the camera or microphone wasn’t on.
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Also, Alberghetti was apparently the first actress in a Broadway musical to use a body mike during a performance. During one performance, the actress exited on cue and had two minutes until she reappeared, bee-lining for the ladies room. However, this particular time the actress forgot to turn off her microphone, so during the middle of the show the audience heard the sound of streaming water followed by an unceremonious flush (which in itself was followed by Algerghettis re-entry). The audience was beside itself with laughter, but thats the beauty of live theatre
http://www.theatreaficionado.com/2009/07/thinking-about-carnival.html
Read this story decades ago. The bathroom noises were described more graphically. It took a few for the audience to figure out exactly what the noises were. Story said she got a standing O when she took the stage again.