Have told this shower story before, but worth repeating here. This was in my guest bathroom. Had this all re-fitted when I first moved in. There is a double shower over the bath (monsoon and hand held). I never used this as I have my en-suite shower cubicle
However, when I was having my kitchen re-fitted, I was sorting out stuff to go to charity shop which would include my rubbish bin. This was a tall white one and the only way to wash the inside was to stand it in the bath and use the hand shower on it, which I did. Would say it was then early evening and I was pretty tired (getting my excuse in straight away).
Finished cleaning this, and just needed to leave it in bath to drain away, tried to turn off shower - nothing happened, turned it other way, nothing happened, concerned about wasting all the hot water, started to panic and in doing so dropped the shower head and it landed spray upwards, soaking me and bathroom floor.
By this time, I was in a real state - telephoned my Son in Law who lived nearby and, bless him ,he did come straight round to me, arriving me to find me soaking wet, in tears and shower over/in bath running as hot and fast as ever. I sobbed to him that I was trying to get hold of plumber and I doubted if he could do anything. He walked into bathroom and then came straight back out saying calmly 'all done'.!!!!
Turned out I had only been using the control which changed shower head, and not the one that turned the water on and off and heat controlled!!!!
Bet he dined out on that Mother in Law story for a long time.