Trapped in a room with a dead body, how long will you last?

A Halloween question. The person just died and you’re trapped. What do you think is the craziest thing you might do or that could happen to you during this experience. This ordeal. Please feel free to hypothesize on what other things are in the room. As long as it can’t be used to dispose of the body.

Put a window. But not big enough for you to push the body out. So there.