I find high pitched noises can be triggers for me... High frequencies
Example:
I wet the diaper a few times at my desk, and then at some point you decide, should I wait and go again, or change now?
Get up to change... start feeling the need to pee.
a) I think going from sitting to standing triggers something... Feel the need to pee way more now.
start walking to the bathroom. our bathroom is locked so you need a key.
As I fiddle with the key, insert, turn, makes a lot of clinky high frequency sounds. Starting feeling the urge to pee rise.
Start heading towards the stall, and close the door.
c) As you I your arms to shut the stall door, and hear that squeak of the door, now the pee just really wants to come out.... And does.
I am never 100% sure how much of it is real or imagined. Either way, it's fucking incredible, and love it each time it happens.