I once went for a bath and the door handle broke, leaving me locked in upstairs.
DH was watching TV (snoozing ?) oblivious to my cries for help.
I was beginning to panic as he didn't hear me ahouting and banging and of course never noticed my absence.
I can see the the fire station drill tower, if I lean far enough out of the bathroom window. I considered screaming "Fire", in the vain hope that a hunky fireman would come and rescue me.
As well as having a screwdriver in your bedroom, always have a screwdriver in your bathroom in case your partner has a tendency to fall asleeep in front of the TV. 