wait until they fill the stove/oven with gas then stick a match or lighter in.
If you are lucky - and Darwin wins, you only kill the stupid. Of course, best case scenario is kill the stupid with a swinging door and that is the end of it. Other end is loose cabin to explosion, really hurt the person lighting the stove, getting a lawsuit, finding you have no insurance because of your stupid move, loosing, loosing your property and be out on the street.
Propane explosions can be spectacular ... be sure and have a safe place to watch from.
Your call,
Ron