And the answer is ....... " Psycho "
There was a early 1920's movie but Psycho ( 1960 ) was the first movie with a toilet flushed scene , it was nearly banned by the censers and from
then on its just a normal scene now in a movie .
Thank you Alfred Hitchcock .
All I want to know now is where do the bad guys in the 1930's / 40's movies get those 20 shot 6 shooters, they never had to load them .
I am a big fan of the old B&W movies.