When is a lock not a lock? A lock cannot be a lock unless there is no door to put it on. A lock isn't a lock when it is an offensive weapon to throw at burglars, instead of defending your house from them.
A lock is something I take for granted. As I do a door. But there are women who cannot go to a hospital even in case of a complicated labour, because the shanties they live in don't have doors, and they cannot leave their home unguarded.
A lock could be the difference between life and death.
A drabble is a story told in exactly 100 words.