Zombie Apocalypse.

You continue barricading the doors and windows to your home, and everything is going well until you become exhausted.

You weakly lift up the last bed frame and collapse due to exhaustion. The heavy thing pins you down, you can't move.

Fortunately, the rest of the home is barricaded, so you need not worry about zombies breaking in while you are in this vulnerable position... At least not tonight.