A game I came up with that is very fun, what we do IRL is we come up with a scenario and somehow make it much more horrendous for the person who's experiencing it and try to keep piling up the dread and horror. But in forum-game form, we can say a poster comes up with something and the following poster adds onto it (whether it's funny or not) and make up a new scenario.
Example - Poster 1:
(adds onto the above scenario)
A pig locked in closet
The Bogeyman is inside with a meat cleaver, he hasn't had anything to eat all day and there is no way out!
The campers get lost on a hike in the mountains!
Get it? Got it? GOOD!
I'll start off by answering "Poster 2"
A yeti comes down, armed to the teeth with new weapons, and now he is really eager to try it out on live targets!
A fly gets stuck in a spider's web!