Zombies throwing themselves at my fire escape window; having to bash their heads in with a hammer.
A plane crashing into our bedroom.
A wave of water rapidly approaching on the horizon; trying to find something nearby that will float.
Having to evacuate the city; the subsequent long walk through Pennsylvania.
Being trapped in an elevator or subway car with strangers; realizing I'm the only one with food, offering to share my food, but having it bullied off me by a big guy with a shaved head.
A lone rat coming up through the toilet to bite me on the bottom.
Portals to another world opening up in the subway floor.