My strangest shower thought came from my strangest shower.
I worked for a small company years ago that paid for a "spa day" for its employees after completing a year long death march project. I had a mediocre massage, but afterwards I went to change I their shower room and decided to give the shower a go.
My god. It had a 3ft square rain shower head and no less than 12 separate side jets on the walls, all adjustable. Every inch of my body was hit simultaneously with hot, pressured water. It was like wearing a suit of hot water armor, head to toe. No matter how I moved, water. It was basically a standing bath. They must have had a city water main hooked up to that shower stall, as the pressure was just ridiculous.
I stood in there for nearly 30 minutes. It was wonderful, and also made me realize that this is how the ultra rich lived. This kind of luxury as an after thought, an expectation. For that moment of time, on someone else's dime, I was in that world. That realization was almost as surreal as the physical experience itself.