Stainless steel cube in your mouth
If in the future people had stainless steel cubes and their hobby was to put it in their mouths for at least 6 hours a day. Let it sit above your tongue and it would give you pleasure.
But one day a year your religion said you should share your cube, let it go. This was a new thing and most people never agreed to this new practice. Crazy I know, afterall it was your cube. Fucking buy your cube if you want one, dont expect me to share it, this was what most people thought.
Then one day you found out what your cube did that day and it was filthy. It had gone to the sewer, inside hospital garbage, dirt, everything sick. But when it was returned to you, it was cleaned. The cube cleaning company said it was cleaned chemically and checked with a microscope and it was completely clean, not bacteria or virus.
Would you use your cube again? Too expensive to buy a new cube.