Okay I tried it and Siri keeps repeating the word zero over and over in a loop, hearing it for a long time makes you think that Siri is saying other things but that is only your brain mishearing it, she is still saying zero. After a while of Siri saying zero, things get interesting. Her voice shifts a pitch lower while still saying the same word. Then her voice goes even deeper after a few seconds later and she eventually loses the z pronunciation, if I can trust my brain that is. Siri said the same word so many times my brain kept changing what I thought it sounded like. Once Siri finishes saying zero, there is a short pause, no audio is heard. Then Siri starts saying zero again in the exact same loop as above. It's a never ending loop until you get out of the Siri menu.
