Every night before we go to bed we go through the same routine, I take his nibs out in the garden for wee & poo, and he duly performs a wee, on asking - try as I may, not same result with poo!! we come indoors, I get my drink and bed ready, shut the lights and curtains to porch - an then he decides oops I did need one after all, so on go the lights - open the curtain, door, out he goes and heyho result.
Nothing wrong with the above - I am pleased we have got to this stage, tbh - but it does make me smile, the routines and little mannerisms they adopt from even a young age