Used one of the shower rooms today purely for shaving purposes, no shower. Was amazed at the sounds coming from the shower whilst using the sink. Below is a quick recording. The first 16 seconds the sink tap was running, then I turned it off. ALL these noises came from the shower, I can assure you I'm not personally intruding in the recording
https://vimeo.com/92581247
What the heck is going on in the plumbing? Are there hippos having vigorous and noisy hanky panky?