The time in which you usually take a poop.
jon - "hey whats your poop o'clock?"
sam - "oh its usually between 23:00 and 0:00"
jon - "nice to know"
when it done did poop'd at a certain time its your poop o'clock
Jon - hey whats your usual poop o'clock?
Sam - oh arround 23:00
Jon - nice to know