I remember a story about a bunch of school kids ( both male and female) participating in a school project that involved showing off various historical execution methods. The point of view character was crucified and was left to watch the rest of the executions before being finished off. I distinctly remember the boy being burned at the stake was mocked because he was peeing himself and that he was finished off by a bag of gunpowder that was tied to him exploding . Another boy was slowly lowered into boiling liquid and was unable to scream due to the steam searing his throat. The girl on the cross would comment on each execution before having her knees broken and dying soon after. I'm pretty sure it was consensual