hi,

good question. i have an idea what caused mine..these are several incidents when i was small which made me aware of this particular 'function' (when really you should be oblivious as a kid):

- when i was small and had a bad stomach (diarrhoea) and was around my aunt's flat (in the days without bathroom keys) i was sitting on the toilet in pain and she used to just come in with an annoyed face and switched the ventilator on (there was a switch for it on the wall next to the toilet)..like not caring about my privacy or pain and just being annoyed that i it might get smelly in the bathroom). this happened a few times.

- also there was a short period of time when my dad was unemployed (usually i was the last one to leave the house for school)..and he actually got up at 6am and sat in the living room right round the corner from the bathroom (maybe 3 metres away and just the bathroom door inbetween), and he had the tv on but so quiet u could just about make out that it wasn't on 'mute'..
so then i also was all of a sudden very aware of that he would hear me in the bathroom..
god knows why on earth he got up so early, he didn't actually start looking for work that early..i had the feeling he did it just to unsettle us but that is probably just my imagination.

and also some other incidents, but i think those 2 are the main ones that i will always remember vividly.

anyway like u i am interested in how everyone else developed their parcopresis..it would be nice to read some other 'eye witness accounts' so to speak.

Emily