Writing prompt: What Would be Your Black Mirror Episode?

So! Another week has passed. This past week I wrote a short story I'm planning to submit into the short SHORT story competition held by Writer's Digest in November. It's called The Baptism and it's about a missionary's wife that undergoes a life-altering transformation when she visits an indigenous tribe in the Brazilian amazon. My writing prompt for the story was: if I had to write a story where mud (yes, wet dirt) had a significant role, what would I write? Apparently, something creepy. If you'd like to see the visual inspiration for The Baptism on my Pinterest page, here's the link:

The Baptism

I have an idea for another short story (I think it's a pretty good one) and I plan to start writing it this week. My prompt: if I were in charge of writing the next Black Mirror episode, what would I write? What would YOU write?? I'm very curious...