Because ours weeps at least 2 or 3 times a day, mostly when she has just got up or before bed (hence tired) but also randomly in the middle of the day if I even vaguely tell her off .
It's ever so slightly annoying, and I have to admit when I hear the 'Muu-uu-uuuuummy' start it makes me want to hide in teh garden. Even if it's raining.