Scream, Yell
You wake up in prison and there is a big mouth full of legs coming really, really close to your own mouth so you scream! Scream because this is terrifying. Scream because it's all you can think to do.
Imagine a prison where horrible mouth leg creatures are trying to get in your mouth. You don't want to scream because they might get in there, but you can't help it.
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You scream and scream and scream until a door bursts open. It's Genghis Khan (かん) and he looks mad. Apparently your screaming is bothering him and now he's gonna give you a real reason to scream.
Imagine Genghis Khan doing something to make you scream. What is it? What could Genghis Khan do that's worse than what's already happening to you?