It’s definitely not the worst, but I’ve been tooling around with the idea of a torture method where a victim is placed with only short clothes in a metal room with a rough grid sandpaper conveyor belt floor. The idea is the floor is moving very slowly 24/7. The victim would have to walk constantly to avoid being scraped. Eventually, they would tire and pass out, but the conveyor will pin them against the wall and start scraping their flesh. This would wake them up and keep them in agony until they bleed out days later or something. Btw: you are the victim.. try and find a way out. OH AND BTW: You are the person in the picture.