I think it'd be cool to see what kinds of ideas you guys got.
Think
Post
???
Profit.
Here's one: You're in a movie theatre. Halfway through the movie some starfish jumps the forget out of his seat and hurls himself at another person. You can only see the sillhouette of him ripping guts out of the other person's throat and eating it. You sprint over there, and discover he is not human. There is obviously something wrong with him so you book out of the theatre and into the main room. Now you are in a stuffstorm and humans are rapidly transforming into mindless animals. You use anything you can against these cannabalistic forgets and try to survive.