My husband was at a quick build and needed a shower and place to rest so a local brother invited him to his place . When he got to the bathroom he noticed the door didn't lock so he just placed his suitcase against the door and got into the shower.
Half way through he heard the door open and someone come in ,he called out to no avail......the homeowners elderly ,hard of hearing mother came in to use the toilet !
He just had to stay in the shower until she was done doing business . heheheh